Mark Fisher, MD, MPH
NPI 1932308244 · Rheumatology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Fisher, MD, MPH is a Rheumatology Physician provider in Boston, MA (NPI 1932308244).
Provider details
- NPI number
- 1932308244
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Male
- Sole proprietor
- No
- License
- 239044 (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
18 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
5,733 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 | 721 | $128 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 675 | $40 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 606 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 454 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 449 | $8 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 64 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 966 | 201 |
| Gabapentin | 913 | 214 |
| Prednisone | 670 | 180 |
| Duloxetine Hcl | 563 | 153 |
| Pregabalin | 369 | 86 |
| Celecoxib | 300 | 68 |
| Zonisamide | 259 | 85 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$48 across 2 records (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
- 2007-07-16
- Last updated
- 2013-11-22
Frequently asked questions
- What is Mark Fisher's NPI number?
- Mark Fisher's National Provider Identifier (NPI) is 1932308244, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Fisher's specialty?
- Mark Fisher is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Fisher located?
- Mark Fisher's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2621.
- What is Mark Fisher's phone number?
- The practice phone number listed in the NPPES registry for Mark Fisher is (617) 726-7938.
- Does Mark Fisher accept Medicare?
- Mark Fisher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Fisher's NPI active?
- Yes — Mark Fisher's NPI (1932308244) is active in the NPPES registry as of the last update on 2013-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.