Harnath Singh, M.D.
NPI 1538133236 · Nephrology Physician · Flagstaff, AZ
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harnath Singh, M.D. is a Nephrology Physician provider in Flagstaff, AZ (NPI 1538133236).
Provider details
- NPI number
- 1538133236
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 26055 (AZ)
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
20 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
1,153 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 623 | $113 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 119 | $122 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 93 | $165 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 84 | $340 |
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older)90961 | 68 | $280 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 83 | 23 |
| Allopurinol | 79 | 25 |
| Losartan Potassium | 41 | 13 |
| Sevelamer Carbonate | 37 | 12 |
| Lisinopril | 36 | 16 |
| Calcitriol | 32 | — |
| Amlodipine Besylate | 29 | — |
| Calcium Acetate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$220 across 10 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
- 2006-02-17
- Last updated
- 2019-10-29
Frequently asked questions
- What is Harnath Singh's NPI number?
- Harnath Singh's National Provider Identifier (NPI) is 1538133236, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harnath Singh's specialty?
- Harnath Singh is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Harnath Singh located?
- Harnath Singh's practice location on file with NPPES is 2201 N Vickey St Ste 110, Flagstaff, AZ 86004-6126.
- What is Harnath Singh's phone number?
- The practice phone number listed in the NPPES registry for Harnath Singh is (928) 213-9460.
- Does Harnath Singh accept Medicare?
- Harnath Singh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Harnath Singh's NPI active?
- Yes — Harnath Singh's NPI (1538133236) is active in the NPPES registry as of the last update on 2019-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.