O R D E R

STEVEN J. McAULIFFE, United States District Judge:

Pursuant to 42 U.S.C. § 405(g), claimant, Edna Belanger, moves to reverse the Commissioner's decision denying her application for Social Security Disability Insurance Benefits under Title II of the Social Security Act, 42 U.S.C. § 423 (the Act). The Commissioner objects and moves for an order affirming her decision.

Factual Background

I. Procedural History

In August of 1999, claimant filed an application for disability insurance benefits under Title II of the Act, alleging that in March of 1998, she became disabled due to pain in her left shoulder, carpal tunnel syndrome, and adverse side-effects of her medications. The Social Security Administration denied her application initially and on reconsideration.

On November 9, 2000, claimant, her attorney, and a vocational expert appeared before an Administrative Law Judge (ALJ) who considered her claims de novo. The ALJ issued his order on January 26, 2001, concluding that, although subject to some restrictions, claimant was capable of performing a range of light and sedentary work and was not, therefore, precluded from performing a significant number of jobs in the national economy. on June 19, 2001, the Appeals Council denied claimant's request for review, thereby rendering the ALJ's disability determination the final decision of the Commissioner.

In response, claimant filed this action, asserting that the ALJ's decision was not supported by substantial evidence and seeking a judicial determination that she is disabled within the meaning of the Act. Claimant then filed a "Motion to Reverse or Remand the Decision of the Commissioner" (document no. 8). The Commissioner objected and filed a "Motion for Order Affirming the Decision of the Commissioner" (document no. 10). Those motions are pending.

II. Stipulated Facts.

Pursuant to Local Rule 9.1(d), the parties have submitted a statement of stipulated facts which, because it is part of the court's record (document no. 11), need not be recounted in this opinion. Those facts relevant to the disposition of this matter are discussed as appropriate.

Standard of Review

I. Properly Supported Factual Findings by the ALJ are Entitled to Deference.

Pursuant to 42 U.S.C. § 405(g), the court is empowered "to enter, upon the pleadings and transcript of the record, a judgment affirming, modifying, or reversing the decision of the Commissioner of Social Security, with or without remanding the cause for a rehearing." Factual findings of the Commissioner are conclusive if supported by substantial evidence. See 42 U.S.C. § 405(g), 1383(c)(3); Irlanda Ortiz v. Secretary of Health and Human Services, 955 F.2d 765, 769 (1st Cir. 1991). Moreover, provided the ALJ's findings are supported by substantial evidence, the court must sustain those findings even when there may also be substantial evidence supporting the adverse position. See Tsarelka v. Secretary of Health and Human Services, 842 F.2d 529, 535 (1st Cir. 1988) ("[W]e must uphold the [Commissioner's] conclusion, even if the record arguably could justify a different conclusion, so long as it is supported by substantial evidence."). See also Gwathney v. Chater, 104 F.3d 1043, 1045 (8th Cir. 1997) (The court "must consider both evidence that supports and evidence that detracts from the [Commissioner's] decision, but [the court] may not reverse merely because substantial evidence exists for the opposite decision."); Andrews v. Shalala, 53 F.3d 1035, 1039-40 (9th Cir. 1995) (The court "must uphold the ALJ's decision where the evidence is susceptible to more than one rational interpretation.").

In making factual findings, the Commissioner must weigh and resolve conflicts in the evidence. See Burgos Lopez v. Secretary of Health and Human Services, 747 F.2d 37, 40 (1st Cir. 1984) (citing Sitar v. Schweiker, 671 F.2d 19, 22 (1st Cir. 1982)). It is "the responsibility of the [Commissioner] to determine issues of credibility and to draw inferences from the record evidence. Indeed, the resolution of conflicts in the evidence is for the [Commissioner] not the courts." Irlanda Ortiz, 955 F.2d at 769. Accordingly, the court will give deference to the ALJ's credibility determinations, particularly where those determinations are supported by specific findings. See Frustaglia v. Secretary of Health and Human Services, 829 F.2d 192, 195 (1st Cir. 1987) (citing Da Rosa v. Secretary of Health and Human Services, 803 F.2d 24, 26 (1st Cir. 1986)).

II. The Parties' Respective Burdens.

An individual seeking Social Security disability benefits is disabled under the Act if he or she is unable "to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or has lasted or can be expected to last for a continuous period of not less than 12 months." 42 U.S.C. § 416(i)(1)(A). The Act places a heavy initial burden on the claimant to establish the existence of a disabling impairment. See Bowen v. Yuckert, 482 U.S. 137, 146-47 (1987); Santiago v. Secretary of Health and Human Services, 944 F.2d 1, 5 (1st Cir. 1991). To satisfy that burden, the claimant must prove that her impairment prevents her from performing her former type of work. See Gray v. Heckler, 760 F.2d 369, 371 (1st Cir. 1985) (citing Goodermote v. Secretary of Health and Human Services, 690 F.2d 5, 7 (1st Cir. 1982)). Nevertheless, the claimant is not required to establish a doubt-free claim. The initial burden is satisfied by the usual civil standard: a "preponderance of the evidence." See Paone v. Schweiker, 530 F. Supp. 808, 810-11 (D.Mass. 1982).

In assessing a disability claim, the Commissioner considers both objective and subjective factors, including: (1) objective medical facts; (2) the claimant's subjective assertions of pain and disability, as supported by the testimony of the claimant or other witnesses; and (3) the claimant's educational background, age, and work experience. See, e.g., Avery v. Secretary of Health and Human Services, 797 F.2d 19, 23 (1st Cir. 1986); Goodermote, 690 F.2d at 6. Provided the claimant has shown an inability to perform her previous work, the burden shifts to the Commissioner to show that there are other jobs in the national economy that she can perform. See Vazquez v. Secretary of Health and Human Services, 683 F.2d 1, 2 (1st Cir. 1982). If the Commissioner shows the existence of other jobs that the claimant can perform, then the overall burden to demonstrate disability remains with the claimant. See Hernandez v. Weinberger, 493 F.2d 1120, 1123 (1st Cir. 1974); Benko v. Schweiker, 551 F. Supp. 698, 701 (D.N.H. 1982).

When determining whether a claimant is disabled, the ALJ is required to make the following five inquiries:

(1) whether the claimant is engaged in substantial gainful activity;

(2) whether the claimant has a severe impairment;

(3) whether the impairment meets or equals a listed impairment;

(4) whether the impairment prevents the claimant from performing past relevant work; and

(5) whether the impairment prevents the claimant from doing any other work.

physical or mental impairment or impairments are of such severity that [s]he is not only unable to do [her] previous work but cannot, considering [her] age, education, and work experience, engage in any other kind of substantial gainful work which exists in the national economy, regardless of whether such work exists in the immediate area in which [s]he lives, or whether a specific job vacancy exists for [her], or whether [s]he would be hired if [s]he applied for work.

With those principles in mind, the court reviews claimant's motion to reverse and the Commissioner's motion to affirm the determination that claimant is not disabled.

Background

In concluding that claimant was not disabled within the meaning of the Act, the ALJ properly employed the mandatory five-step sequential evaluation process described in 20 C.F.R. § 404.1520. Accordingly, he first determined that claimant had not been engaged in substantial gainful employment since her alleged onset of disability. Next, the ALJ concluded that the medical evidence of record indicates that the claimant has "problems with her left shoulder, carpal tunnel syndrome and effects of medications, impairments that are severe within the meaning of the Regulations." Transcript at 16. However, the ALJ determined that claimant's impairments were "not severe enough to meet or medically equal one of the impairments listed in Appendix 1, Subpart P, Regulations No. 4." Id.

Next, the ALJ assessed claimant's residual functional capacity ("RFC") and concluded that she:

retains the residual functional capacity to lift and carry and push or pull no more than 20 pounds occasionally and only up to 10 pounds frequently. Further, the claimant cannot repetitively reach above shoulder level, cannot perform tasks requiring fine finger movement and is moderately limited in her ability to understand, remember and carry out complex work instructions.

Transcript at 17. In light of that assessment of claimant's RFC, the ALJ concluded that she could not perform her past relevant work, which required her to lift 50 pounds occasionally and up to 25 pounds frequently. He did, however, find that claimant was capable of performing a range of light and sedentary work, with some limitations imposed by her exertional and non-exertional impairments. Id.

Finally, the ALJ asked the vocational expert whether there is a significant number of jobs in the national economy that might be performed by an individual with claimant's age, educational background, and exertional and non-exertional limitations (as found by the ALJ). The vocational expert opined that there is a significant number of jobs that such an individual might perform. Consequently, at the close of the hearing, the ALJ informed claimant and her attorney that, based on the evidence and testimony before him, he felt compelled to conclude that claimant was not disabled and specifically asked claimant's counsel what evidence supported claimant's assertion that she is disabled.

ALJ: Based upon the evidence that I've seen . . . and heard, I've got a denial of benefits here.

ATTY: I know I've . . . asked you before and you, you said you can't do this, but if I could . . . have two weeks to get the consultive examination in from her treating doctor now, I would appreciate that. . . . .

AJL: — what is he going to tell me?

ATTY: Well, he might — he might disagree with, with what you think she can do on the — as to, you know, the eight-hour, for instance.

Transcript at 50-51. Later, the ALJ again asked claimant's attorney what evidence might support a finding of disability.

ALJ: Do you have any proposal as to how you're going to overcome a denial at this point?

ATTY: Well, the only thing I can say, Your Honor, is that the doctor who is treating her is —

ALJ: Which doctor are we talking about?

ATTY: I think it's Dr. [Toczylowski] who is the one that she has switched to recently. And his most recent report that we have is . . . May. If he is more specific as to her limitations as to the problems, physical, that she has and, and if he is . . . specific as to what her limitations are, that could be a situation where that's new medical evidence that neither you, Judge, or the VE has had an opportunity to see. That's basically it.

Transcript at 56-57.

In light of those exchanges, the ALJ granted claimant one week within which to submit additional evidence from her treating sources. Claimant took the opportunity to supplement the record with additional evidence she felt supported her disability claim. First, she presented Dr. Toczylowski's "Medical Assessment of Ability to do Work-Related Activities," in which he concluded that although claimant's impairments did not affect her ability to sit, stand, or walk for up to eight hours a day, she can not lift more than five pounds even occasionally. Transcript at 380. Additionally, claimant provided a Medical Assessment of Ability to do Work-Related Activities completed by her physical therapist, Candice Mangio, in which Ms. Mangio opined that claimant: (1) could, at most, lift no more that five pounds occasionally; (2) has decreased shoulder strength and grip strength; and (3) might pose a safety hazard to herself and/or those around her if she were required to lift or carry objects as part of her employment. Transcript at 374.

In the end, however, the ALJ concluded that, "Dr. Toczylowski medically assessed the claimant as being able to perform physical functions consistent with a range or light and sedentary work." Transcript at 16. Similarly, he determined that, "claimant's physical therapist also assessed the claimant with the functional ability to perform [a] range of light and sedentary work with limitations against overhead reaching due to pain, decreased strength and limitation of motion involving the upper extremity." Id. Accordingly, at step five of the sequential analysis, the ALJ concluded that claimant "is capable of making a successful adjustment to work that exists in significant numbers on the national economy. A finding of `not disabled' is therefore reached within the framework of Medical-Vocational Rules. . . ." Transcript at 18-19.

In support of her motion to reverse or remand, claimant raises three arguments: first, that the ALJ erroneously assessed her RFC; second, that the ALJ incorrectly calculated her age and improperly treated her as a "younger individual," rather than as someone "approaching advanced age"; and, finally, that the ALJ improperly discounted claimant's subjective complaints of pain. The Commissioner defends each of the challenged decisions by the ALJ as either substantially supported by record evidence or, in the case of the erroneous calculation of claimant's age, as immaterial to the ALJ's ultimate finding of no disability.

Because the court concludes that the ALJ's determination of claimant's RFC is not supported by substantial evidence, it need not address the merits of her remaining claims.

Discussion

The record contains the opinions of four individuals — three doctors (at least two of whom qualify as "treating sources") and a physical therapist — who opined that claimant is incapable of lifting more than five pounds even occasionally. See Treatment notes of Alan Curtis, M.D., Transcript at 224 (opining that claimant could lift no more than five pounds); Consultative Evaluation notes of Denrick Crespi, D.O., Transcript at 232 (same); Medical Assessment of Candice Mangio, PT, Transcript at 374 (same); Medical Assessment of Harry Toczylowski, M.D., Transcript at 379 (same). Notwithstanding those opinions, the ALJ concluded that claimant retains the residual functional capacity to lift and carry up to 20 pounds occasionally and up to 10 pounds frequently.

The ALJ appears to have based his opinion, at least in part, on an erroneous interpretation of some of the medical evidence before him. For example, he concluded that, "Dr. [Toczylowski] medically assessed the claimant as being able to perform physical functions consistent with a range of light and sedentary work." Transcript at 16. As noted above, however, Dr. Toczylowski opined that claimant was not capable of lifting more than five pounds even occasionally. Id., at 379. With regard to the treatment notes and evaluation prepared by Ms. Mangio, the ALJ concluded, "the claimant's physical therapist also assessed the claimant with the functional ability to perform [a] range of light and sedentary work." Id., at 16. Again, however, that interpretation of the medical evidence is not accurate. Like several other health care providers, Ms. Mangio opined that claimant was incapable of lifting or carrying more than five pounds, id., at 374 — a functional limitation which, if true, would disqualify claimant from performing even sedentary work.

In discussing the weight that will be ascribed to the opinions of "treating sources," the pertinent regulations provide:

Generally, we give more weight to opinions from [the claimant's] treating sources, since these sources are likely to be the medical professionals most able to provide a detailed, longitudinal picture of [the claimant's] medical impairments(s) . . . When we do not give the treating source's opinion controlling weight, we apply the factors listed [in this section] in determining the weight to give the opinion. We will always give good reasons in our notice of determination or decision for the weight we give you treating source's opinion.

To be sure, there is some evidence in the record supportive of the notion that claimant is capable of lifting perhaps as much as 20 pounds on an infrequent basis, and 10 pounds more frequently. See Functional Capacity Assessment prepared by Hugh Fairley, M.D., dated November, 1999, transcript at 241; Functional Capacity Assessment prepared by Marci Lipski, dated February, 2000, transcript at 246. Importantly, however, neither Dr. Fairley nor Dr. Lipski was a treating source, nor did either have the benefit of the reports prepared by Dr. Toczylowski and Ms. Mangio, which the ALJ allowed claimant to add to the record shortly after the administrative hearing. See generally Rosario v. Apfel, 85 F. Supp.2d 62, 67-69 (D.Ma. 2000) (discussing the situation in which a non-examining physician opines as to a claimant's RFC without having had the opportunity to review claimant's entire medical record).

This case, like many of its sort, presents a close and difficult call. In the end, however, the court is constrained to conclude that the ALJ failed to adequately explain the basis of his decision to discount the opinions of claimant's health care providers (at least two of whom are "treating sources"), who opined that she is incapable of lifting or carrying more than five pounds on even an infrequent basis. In the absence of such an explanation, the court cannot conclude that there is substantial evidence in the record to support the ALJ's determination that claimant is capable of lifting and carrying up to 10 pounds frequently and as much as 20 pounds infrequently. Consequently, the ALJ's determination that claimant is capable of performing a range of light and sedentary work also lacks substantial support in the record. See generally 20 C.F.R. § 404.1527(d)(2).

Conclusion

Pursuant to sentence four of 42 U.S.C. § 405(g), this matter is remanded to the ALJ for further proceedings. The Clerk of the Court shall enter judgment in accordance with this order and close the case.

SO ORDERED.