Harnath Singh, M.D.
Nephrology Physician · Flagstaff, AZ
Harnath Singh, M.D. is a nephrology physician with a practice address in Flagstaff, Arizona, and NPI 1538133236, issued on Feb 17, 2006. Check the license (Arizona 26055, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Harnath Singh
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 26055 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 2201 N Vickey St Ste 110, Flagstaff, AZ 86004
- Phone
- (928) 213-9460
- Enumerated
- Feb 17, 2006
- Record last updated
- Oct 29, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (928) 213-9465
- Medicaid ID
- 405953 AZ
- Medicare enrollment
- Enrolled (PECOS I20041028001099); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 278 in Arizona → Look up another NPI →
Also registered at 2201 N Vickey St Ste 110
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ang Chen, M.D.Nephrology Physician1497852404
- Matthew Gembala, M.D., M.P.H.Nephrology Physician1114950185
- Jessie Gould, ACNPC-AGAcute Care Nurse Practitioner1710679931
Verify Harnath Singh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 26055Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average nephrology physician in 2024
613 Medicare Part D claims for 151 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Furosemide83 claims
- Allopurinol79 claims
- Losartan Potassium41 claims
- Sevelamer Carbonate37 claims
- Lisinopril36 claims
- Calcitriol32 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $219.99
10 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Akdhc LLCFlagstaff, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Harnath Singh among 278 nephrology physician records in Arizona
Harnath Singh, M.D. is one of 278 nephrology physician records with a practice address in Arizona. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 23% of them.
- NPI issued2006 · 23% of these records are older, 51% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated1975 · median 2001 among the 229 with a school on file
- Record last updated2019 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Arizona
There are 278 nephrology physician records in Arizona.
All 278 in Arizona → Every provider in Flagstaff → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Ang Chen, M.D.Flagstaff, AZ 860041497852404
- Matthew Gembala, M.D., M.P.H.Flagstaff, AZ 860041114950185
- Wei Xiang WongFlagstaff, AZ 860011639551526
- Robert Seaton, M.D.Show Low, AZ 859011942207246
- Daniel Castro Pereira, M.D.Tucson, AZ 857451912212390
- Barry Krieble, M.D.Tucson, AZ 857451740287218
- Anil Nabha, MDTucson, AZ 857451558547562
- Jessica Nino Mojica, MDTucson, AZ 857451922584796
Common questions
What is Harnath Singh, M.D.'s NPI number?
Harnath Singh, M.D.'s National Provider Identifier (NPI) is 1538133236, issued on Feb 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Harnath Singh, M.D. located?
The NPPES record lists a practice address at 2201 N Vickey St Ste 110, Flagstaff, AZ, 86004. Phone: (928) 213-9460. Providers update this record themselves, so call before visiting.
How can I verify Harnath Singh, M.D.'s license?
NPPES lists Arizona license number 26055, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Harnath Singh, M.D. prescribe under Medicare Part D?
In 2024, Harnath Singh, M.D. had 613 Medicare Part D claims for 151 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.