Sharon Karp, M.D.
NPI 1265507768 · Rheumatology Physician · Stamford, CT
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sharon Karp, M.D. is a Rheumatology Physician provider in Stamford, CT (NPI 1265507768).
Provider details
- NPI number
- 1265507768
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 27019 (CT)
Specialties & taxonomies
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
19 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
611 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 | 286 | $136 |
| 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 | 267 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 42 | $96 |
| Administration of Influenza Virus VaccineG0008 | 16 | $34 |
Typical Medicare-allowed amounts for these services range $17–$136 (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 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 294 | 62 |
| Methotrexate Sodiumbrand: Methotrexate | 242 | 61 |
| Prednisone | 219 | 79 |
| Sulfasalazine | 61 | 15 |
| Folic Acid | 48 | 17 |
| Adalimumabbrand: Humira(cf) Pen | 41 | — |
| Celecoxib | 36 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-21
- Last updated
- 2014-01-07
Frequently asked questions
- What is Sharon Karp's NPI number?
- Sharon Karp's National Provider Identifier (NPI) is 1265507768, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sharon Karp's specialty?
- Sharon Karp is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Sharon Karp located?
- Sharon Karp's practice location on file with NPPES is 1450 Washington Blvd, Stamford, CT 06902-2451.
- What is Sharon Karp's phone number?
- The practice phone number listed in the NPPES registry for Sharon Karp is (203) 327-9321.
- Does Sharon Karp accept Medicare?
- Sharon Karp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sharon Karp's NPI active?
- Yes — Sharon Karp's NPI (1265507768) is active in the NPPES registry as of the last update on 2014-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.