Atam Singh, M.D.
NPI 1548271166 · Endocrinology, Diabetes & Metabolism Physician · Riverside, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Atam Singh, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Riverside, CA (NPI 1548271166).
Provider details
- NPI number
- 1548271166
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A66788 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,712 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 1,669 | $129 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 783 | $180 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 398 | $34 |
| 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 | 373 | $16 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 134 | $131 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 59 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 660 | 153 |
| Semaglutidebrand: Ozempic | 495 | 100 |
| Metformin Hcl | 336 | 97 |
| Dulaglutidebrand: Trulicity | 301 | 55 |
| Glipizide | 225 | 57 |
| Empagliflozinbrand: Jardiance | 176 | 52 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,107 across 52 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-10
- Last updated
- 2012-10-02
Frequently asked questions
- What is Atam Singh's NPI number?
- Atam Singh's National Provider Identifier (NPI) is 1548271166, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Atam Singh's specialty?
- Atam Singh is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Atam Singh located?
- Atam Singh's practice location on file with NPPES is 5256 Mission Blvd, Riverside, CA 92509-4624.
- What is Atam Singh's phone number?
- The practice phone number listed in the NPPES registry for Atam Singh is (951) 955-5380.
- Does Atam Singh accept Medicare?
- Atam Singh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Atam Singh's NPI active?
- Yes — Atam Singh's NPI (1548271166) is active in the NPPES registry as of the last update on 2012-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.