James Warshaw, MD, PHD
NPI 1356306211 · Endocrinology, Diabetes & Metabolism Physician · Taunton, MA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Warshaw, MD, PHD is a Endocrinology, Diabetes & Metabolism Physician provider in Taunton, MA (NPI 1356306211).
Provider details
- NPI number
- 1356306211
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- License
- 79137 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
230 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 64 | $155 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 62 | $108 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 56 | $9 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 18 | $201 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 17 | $134 |
| Ultrasound Scan of Head and Neck Soft Tissue76536 | 13 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 142 | 38 |
| Semaglutidebrand: Ozempic | 69 | 16 |
| Atorvastatin Calcium | 57 | 13 |
| Sitagliptin Phosphatebrand: Januvia | 51 | 14 |
| Paroxetine Hcl | 41 | — |
| Metformin Hcl | 39 | 12 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$29 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is James Warshaw's NPI number?
- James Warshaw's National Provider Identifier (NPI) is 1356306211, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Warshaw's specialty?
- James Warshaw is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is James Warshaw located?
- James Warshaw's practice location on file with NPPES is 2005 Bay St, Taunton, MA 02780-1085.
- What is James Warshaw's phone number?
- The practice phone number listed in the NPPES registry for James Warshaw is (508) 821-9400.
- Does James Warshaw accept Medicare?
- James Warshaw is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Warshaw's NPI active?
- Yes — James Warshaw's NPI (1356306211) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.