Hai Chi Keng, M.D.
Internal Medicine Physician · Prescott, AZ
Hai Chi Keng, M.D. is an internal medicine physician with a practice address in Prescott, Arizona, and NPI 1174617278, issued on Oct 3, 2006. Check the license on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Hai Chi Keng
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D40321 MD
Self-reported in NPPES; status is on the state search - Practice location
- 500 N Hwy 89, Prescott, AZ 86313
- Phone
- (928) 445-4860
- Enumerated
- Oct 3, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 500 N Hwy 89
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Bricker, M.D.Surgery Physician1265526362
- Juliana Cargill, ANP GNPRegistered Nurse1710063490
- Nancy Devine, LBSWSocial Worker1083708184
- Dennis Fearno, PHARMACISTPharmacist1780776542
- Linda FrySocial Worker1447920913
- Renee Jelinek, M.D.Internal Medicine Physician1134211527
Verify Hai Chi Keng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
24 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Hai Chi Keng among 2,853 internal medicine physician records in Arizona
Hai Chi Keng, M.D. is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2007 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 internal medicine physician records list a practice address in Prescott
They are 48 of the 1,818 NPPES records with a practice address in Prescott, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Prescott → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- August Bergman, M.D.Prescott, AZ 863131184732604
- Daniel Collins, MDPrescott, AZ 863131922033505
- George Cristea, MDPrescott, AZ 863131336179035
- Stephanie Duensing, MDPrescott, AZ 863131346270170
- David Duensing, MDPrescott, AZ 863131922039395
- Renee Jelinek, M.D.Prescott, AZ 863131134211527
- Jyotsana Patel, M.D.Prescott, AZ 863131033224118
- Ayyasamy Selvam, MDPrescott, AZ 863131104935832
Common questions
What is Hai Chi Keng, M.D.'s NPI number?
Hai Chi Keng, M.D.'s National Provider Identifier (NPI) is 1174617278, issued on Oct 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Hai Chi Keng, M.D. located?
The NPPES record lists a practice address at 500 N Hwy 89, Prescott, AZ, 86313. Phone: (928) 445-4860. Providers update this record themselves, so call before visiting.
How can I verify Hai Chi Keng, M.D.'s license?
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 Hai Chi Keng, M.D. prescribe under Medicare Part D?
In 2024, Hai Chi Keng, M.D. had 24 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.