Samantha Diamond-Rossi, MD
NPI 1265850903 · Endocrinology, Diabetes & Metabolism Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Samantha Diamond-Rossi, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Fairfax, VA (NPI 1265850903).
Provider details
- NPI number
- 1265850903
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 0101266652 (VA)
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
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
114 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 | 80 | $103 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 17 | $144 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 17 | $148 |
Typical Medicare-allowed amounts for these services range $103–$148 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 243 | 66 |
| Levothyroxine Sodiumbrand: Synthroid | 23 | 11 |
| Hydrocortisone | 18 | — |
| Fludrocortisone Acetate | 14 | — |
| Calcitriol | 13 | — |
| Lenvatinib Mesylatebrand: Lenvima | 12 | — |
| Semaglutidebrand: Ozempic | 12 |
Practice location
Mailing address
Additional practice locations (1)
- 3300 Gallows RdFalls Church, VA 22042-3307Phone: (703) 776-4001
Registry dates
- Enumerated
- 2014-03-31
- Last updated
- 2026-04-23
- Certified
- 2026-04-23
Frequently asked questions
- What is Samantha Diamond-Rossi's NPI number?
- Samantha Diamond-Rossi's National Provider Identifier (NPI) is 1265850903, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Samantha Diamond-Rossi's specialty?
- Samantha Diamond-Rossi is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Samantha Diamond-Rossi located?
- Samantha Diamond-Rossi's practice location on file with NPPES is 8081 Innovation Park Dr, Fairfax, VA 22031-4867.
- What is Samantha Diamond-Rossi's phone number?
- The practice phone number listed in the NPPES registry for Samantha Diamond-Rossi is (571) 472-1600.
- Does Samantha Diamond-Rossi accept Medicare?
- Samantha Diamond-Rossi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Samantha Diamond-Rossi's NPI active?
- Yes — Samantha Diamond-Rossi's NPI (1265850903) is active in the NPPES registry as of the last update on 2026-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.