Ruffaida Diwan, M.D.
NPI 1598058851 · Internal Medicine Physician · Bronx, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruffaida Diwan, M.D. is a Internal Medicine Physician provider in Bronx, NY (NPI 1598058851).
Provider details
- NPI number
- 1598058851
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 272141 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 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
593 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 195 | $140 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 108 | $93 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 75 | $203 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 61 | $134 |
| Critical Care, First 30-74 Minutes99291 | 59 | $252 |
| Advance Care Planning, First 30 Minutes99497 | 39 | $89 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 23 | 20 |
| Prednisone | 18 | 14 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 16 | — |
| Atorvastatin Calcium | 15 | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-19
- Last updated
- 2018-10-24
Frequently asked questions
- What is Ruffaida Diwan's NPI number?
- Ruffaida Diwan's National Provider Identifier (NPI) is 1598058851, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruffaida Diwan's specialty?
- Ruffaida Diwan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ruffaida Diwan located?
- Ruffaida Diwan's practice location on file with NPPES is Montefiore Medical Center, Bronx, NY 10467.
- What is Ruffaida Diwan's phone number?
- The practice phone number listed in the NPPES registry for Ruffaida Diwan is (718) 904-2400.
- Does Ruffaida Diwan accept Medicare?
- Ruffaida Diwan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruffaida Diwan's NPI active?
- Yes — Ruffaida Diwan's NPI (1598058851) is active in the NPPES registry as of the last update on 2018-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.