NPPES file of Aug 9, 2026

Harish Anandha Narayanan, M.D.

Vascular & Interventional Radiology Physician · Walnut Creek, CA

Harish Anandha Narayanan, M.D. is a vascular & interventional radiology physician with a practice address in Walnut Creek, California, and NPI 1023421666, issued on Jun 10, 2014. Check the license (California A190253, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023421666
Name
Harish Anandha Narayanan
Credential
M.D.
Primary taxonomy
Vascular & Interventional Radiology Physician 2085R0204X
License number
A190253 CA
Self-reported in NPPES; status is on the state search
Practice location
1425 S Main St, Walnut Creek, CA 94596
Phone
(925) 295-4000
Enumerated
Jun 10, 2014
Record last updated
Oct 16, 2023
Medicare enrollment
Enrolled (PECOS I20231026003474); accepts Medicare assignment
Medical or professional school
University Of Arizona College Of Medicine, 2014
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1425 S Main St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Eric AaserudeEmergency Medicine Physician1811491194
  2. Derek Abbassi, MDObstetrics & Gynecology Physician1841364155
  3. Peter Ackerman, MDEmergency Medicine Physician1427435023
  4. Aaron Mark Acosta, DOEmergency Medicine Physician1538789987
  5. Basil Adad, MDOtolaryngology Physician1487732574
  6. Derek Ailes, M.D.Emergency Medical Services (Emergency Medicine) Physician1992001804

Verify Harish Anandha Narayanan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A190253
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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83% fewer Medicare Part D claims than the average vascular & interventional radiology physician in 2024

13 Medicare Part D claims, against an average of 75 among the 1,444 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Harish Narayanan13
  2. Specialty average75

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.

No measured MIPS final score for 2023

CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $234.56

2 payments; by number, the most common kind was food and beverage; the largest payer was ShockWave Medical, Inc. The 3,457 providers of this specialty with any payment received $7,206.73 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Harish Narayanan$234.56
  2. Specialty average$7,206.73

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

  1. Permanente Medical Group IncWalnut Creek, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Harish Anandha Narayanan among 599 vascular & interventional radiology physician records in California

Harish Anandha Narayanan, M.D. is one of 599 vascular & interventional radiology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 77% of them.

  • NPI issued2014 · 77% of these records are older, 21% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 83% of these records are
  • Graduated2014 · median 2007 among the 497 with a school on file
  • Record last updated2023 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0204X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Vascular & Interventional Radiology Physician providers in California

There are 599 vascular & interventional radiology physician records in California.

The 8 vascular & interventional radiology physician records with the nearest ZIP codes

  1. Paul Ho, MDWalnut Creek, CA 945961740369404
  2. Simpson So, MDWalnut Creek, CA 945961841378940
  3. Howard Young, MDWalnut Creek, CA 945961457425738
  4. Ira Finch, M.D.Walnut Creek, CA 945981366472912
  5. Erik Gaensler, MDWalnut Creek, CA 945981376598474
  6. Patrick Gonzales, M.D.Walnut Creek, CA 945981669779179
  7. Richard Hong, M.D.Walnut Creek, CA 945981487805362
  8. Robert Kim, M.D.Walnut Creek, CA 945981477598506

Common questions

What is Harish Anandha Narayanan, M.D.'s NPI number?

Harish Anandha Narayanan, M.D.'s National Provider Identifier (NPI) is 1023421666, issued on Jun 10, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Harish Anandha Narayanan, M.D. located?

The NPPES record lists a practice address at 1425 S Main St, Walnut Creek, CA, 94596. Phone: (925) 295-4000. Providers update this record themselves, so call before visiting.

How can I verify Harish Anandha Narayanan, M.D.'s license?

NPPES lists California license number A190253, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Harish Anandha Narayanan, M.D. prescribe under Medicare Part D?

In 2024, Harish Anandha Narayanan, M.D. had 13 Medicare Part D claims; the average among vascular & interventional radiology physician prescribers was 75. Part D covers Medicare prescriptions only.

What is Harish Anandha Narayanan, M.D.'s MIPS final score?

CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.

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.