Usman Singidas, MD
NPI 1811457559 · Hospitalist Physician · Whittier, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Usman Singidas, MD is a Hospitalist Physician provider in Whittier, CA (NPI 1811457559).
Provider details
- NPI number
- 1811457559
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
748 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 | 248 | $115 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 176 | $75 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 157 | $110 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 111 | $167 |
| Critical Care, First 30-74 Minutes99291 | 56 | $202 |
Typical Medicare-allowed amounts for these services range $75–$202 (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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 32 | 16 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 30 | 29 |
| Prednisone | 21 | 20 |
| Pantoprazole Sodium | 19 | 18 |
| Furosemide | 19 | 19 |
| Ticagrelorbrand: Brilinta | 16 | — |
| Metoprolol Tartrate |
Practice location
Mailing address
Additional practice locations (4)
- 11500 Brookshire AveDowney, CA 90241-4917Phone: (562) 904-5000Fax: (562) 904-5140
- 1225 Wilshire BlvdLos Angeles, CA 90017-1901Phone: (213) 977-2121Fax: (213) 482-2770
- 5666 E State StRockford, IL 61108-2425Phone: (815) 381-7715
- 111 E 210th StBronx, NY 10467-2401Phone: (718) 920-9892
Registry dates
- Enumerated
- 2019-03-20
- Last updated
- 2026-03-17
- Certified
- 2026-03-17
Frequently asked questions
- What is Usman Singidas's NPI number?
- Usman Singidas's National Provider Identifier (NPI) is 1811457559, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Usman Singidas's specialty?
- Usman Singidas is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Usman Singidas located?
- Usman Singidas's practice location on file with NPPES is 12401 Washington Blvd, Whittier, CA 90602-1006.
- What is Usman Singidas's phone number?
- The practice phone number listed in the NPPES registry for Usman Singidas is (562) 698-0811.
- Does Usman Singidas accept Medicare?
- Usman Singidas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Usman Singidas's NPI active?
- Yes — Usman Singidas's NPI (1811457559) is active in the NPPES registry as of the last update on 2026-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.