Harkamal Singh, M.D.
NPI 1831342534 · Hospitalist Physician · Marysville, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harkamal Singh, M.D. is a Hospitalist Physician provider in Marysville, CA (NPI 1831342534).
Provider details
- NPI number
- 1831342534
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A105094 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
1,591 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 | 799 | $116 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 437 | $171 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 206 | $112 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 149 | $78 |
Typical Medicare-allowed amounts for these services range $78–$171 (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 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 159 | 43 |
| Atorvastatin Calcium | 145 | 51 |
| Furosemide | 140 | 46 |
| Gabapentin | 114 | 25 |
| Levothyroxine Sodium | 107 | 28 |
| Apixabanbrand: Eliquis | 84 | 26 |
| Potassium Chloride | 81 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-10-28
- Last updated
- 2021-11-30
- Certified
- 2021-11-30
Frequently asked questions
- What is Harkamal Singh's NPI number?
- Harkamal Singh's National Provider Identifier (NPI) is 1831342534, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harkamal Singh's specialty?
- Harkamal Singh is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Harkamal Singh located?
- Harkamal Singh's practice location on file with NPPES is 726 4th St, Marysville, CA 95901-5656.
- What is Harkamal Singh's phone number?
- The practice phone number listed in the NPPES registry for Harkamal Singh is (972) 924-4330.
- Does Harkamal Singh accept Medicare?
- Harkamal Singh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Harkamal Singh's NPI active?
- Yes — Harkamal Singh's NPI (1831342534) is active in the NPPES registry as of the last update on 2021-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.