James A. Warshaw, MD, PHD
Endocrinology, Diabetes & Metabolism Physician · Taunton, MA
James A. Warshaw, MD, PHD is an endocrinology, diabetes & metabolism physician with a practice address in Taunton, Massachusetts, and NPI 1356306211, issued on Apr 20, 2006. Check the license (Massachusetts 79137, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- James A. Warshaw
- Credential
- MD, PHD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 79137 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2005 Bay St, Taunton, MA 02780
- Phone
- (508) 821-9400
- Enumerated
- Apr 20, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (508) 821-9151
- Medicaid ID
- 3160378 MA
- Medicare enrollment
- Enrolled (PECOS I20160921000605); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 522 in Massachusetts → Look up another NPI →
Also registered at 2005 Bay St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- John Gittinger, MDOphthalmology Physician1760479406
- Bridget Hendricks, O.D., M.S.Optometrist1881618312
- Jacqueline Hess, MDPreventive Medicine/Occupational Environmental Medicine Physician1619959988
Verify James A. Warshaw in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 79137Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,008 Medicare Part D claims for 131 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Levothyroxine Sodium142 claims
- Ozempic69 claims
- Atorvastatin Calcium57 claims
- Januvia51 claims
- Paroxetine Hcl41 claims
- Metformin Hcl39 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $28.87
1 payment: food and beverage; the largest payer was Sanofi Pasteur Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Parcare Community Health Network IncBrooklyn, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James A. Warshaw among 522 endocrinology, diabetes & metabolism physician records in Massachusetts
James A. Warshaw, MD, PHD is one of 522 endocrinology, diabetes & metabolism physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 52% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1992 · median 2002 among the 378 with a school on file
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Massachusetts
There are 522 endocrinology, diabetes & metabolism physician records in Massachusetts.
All 522 in Massachusetts → Every provider in Taunton → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Hagop Kojanian, MDTaunton, MA 027801982837738
- Tonslyn Toure, MDPlainville, MA 027621003081944
- Anna Kozupa, M.D.Dartmouth, MA 027471376738039
- Justin Matrisciano, MDDartmouth, MA 027471922093210
- Vibhavasu Sharma, M.D.New Bedford, MA 027401194786194
- Alaa Kubbar, MDFall River, MA 027211528598943
- Kishore Lakshman, MD,MPHFall River, MA 027211992909568
- Majed Mouded, M.D.Fall River, MA 027211346248531
Common questions
What is James A. Warshaw, MD, PHD's NPI number?
James A. Warshaw, MD, PHD's National Provider Identifier (NPI) is 1356306211, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James A. Warshaw, MD, PHD located?
The NPPES record lists a practice address at 2005 Bay St, Taunton, MA, 02780. Phone: (508) 821-9400. Providers update this record themselves, so call before visiting.
How can I verify James A. Warshaw, MD, PHD's license?
NPPES lists Massachusetts license number 79137, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James A. Warshaw, MD, PHD prescribe under Medicare Part D?
In 2024, James A. Warshaw, MD, PHD had 1,008 Medicare Part D claims for 131 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.