John Shearman, MD
NPI 1689661498 · Rheumatology Physician · Portsmouth, NH
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Shearman, MD is a Rheumatology Physician provider in Portsmouth, NH (NPI 1689661498).
Provider details
- NPI number
- 1689661498
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5354 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,045 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 900 | $127 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 86 | $89 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 37 | $163 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 22 | $107 |
Typical Medicare-allowed amounts for these services range $89–$163 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 588 | 153 |
| Methotrexate Sodiumbrand: Methotrexate | 349 | 69 |
| Alendronate Sodium | 200 | 55 |
| Hydroxychloroquine Sulfate | 186 | 43 |
| Allopurinol | 161 | 41 |
| Methylprednisolone | 144 | 37 |
| Tramadol Hcl | 86 | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-06
- Last updated
- 2007-08-08
Frequently asked questions
- What is John Shearman's NPI number?
- John Shearman's National Provider Identifier (NPI) is 1689661498, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Shearman's specialty?
- John Shearman is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is John Shearman located?
- John Shearman's practice location on file with NPPES is 278 Lafayette Rd, Portsmouth, NH 03801-5455.
- What is John Shearman's phone number?
- The practice phone number listed in the NPPES registry for John Shearman is (603) 431-0835.
- Does John Shearman accept Medicare?
- John Shearman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Shearman's NPI active?
- Yes — John Shearman's NPI (1689661498) is active in the NPPES registry as of the last update on 2007-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.