Marissa Karpoff, M.D.
NPI 1659613347 · Rheumatology Physician · Wynnewood, PA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1659613347
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD464904 (PA)
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
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
366 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 | 205 | $135 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 67 | $175 |
| 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'SG2211 | 45 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 22 | $97 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 15 | $79 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 383 | 121 |
| Hydroxychloroquine Sulfate | 216 | 65 |
| Methotrexate Sodiumbrand: Methotrexate | 184 | 46 |
| Gabapentin | 140 | 44 |
| Celecoxib | 91 | 25 |
| Diclofenac Sodium | 84 | 34 |
| Tramadol Hcl | 75 | 16 |
Practice location
Mailing address
Additional practice locations (4)
- 1935 Route 70 E Fl 2Cherry Hill, NJ 08003Phone: (856) 428-7700
- 1275 York AveNew York, NY 10065-6007Phone: (212) 639-2734
- 1275 York AveNew York, NY 10065-6007Phone: (212) 639-2734
- 825 Old Lancaster Rd Ste 320Bryn Mawr, PA 19010-3235Phone: (610) 527-3800
Registry dates
- Enumerated
- 2013-03-20
- Last updated
- 2026-04-15
- Certified
- 2026-04-15
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.