DR. MARK C FISHER (MD, MPH) – Rheumatology Physician, NPI 1932308244
Rheumatology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
307 RHEUMATOLOGY in MA
Loading map...
Provider Addresses for DR. MARK C FISHER (MD, MPH)
Massachusetts General Hospital, 55, Fruit Street, Beacon Hill, Boston, Suffolk County, Massachusetts, 02114, United States
BOSTON, MA 021142621
Phone:
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $162.
Total Amount is formed as General ($48) + Research ($114) + Ownership ($0) = $162.
Last reported payment date: 2024-12-10 • Largest payer in this snapshot: Eli Lilly and Company ($114).
Total Amount
$162
General + Research + Ownership
Payments
3
Total payment records
General Amount
$48
General payments
Research Amount
$114
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Eli Lilly and Company | $114 |
| Organon LLC | $25 |
| Novartis Pharmaceuticals Corporation | $23 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2025-03-27
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20090618000126 | I | Rheumatology | MA | TBD |
| I20250327002294 | I | Rheumatology | RI | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| J0897 | Injection, denosumab, 1 mg | 23,700 | 229 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 800 | 444 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 672 | 421 | $0 |
| 80053 | Blood test, comprehensive group of blood chemicals | 481 | 292 | $0 |
| 85025 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 464 | 283 | $0 |
Insurance plans in this area (ZIP 02114)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | MA | |
| G A S T R O E N T E R O L O G Y | MA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.