NPPES file of Aug 9, 2026

Hakan Erik Wahlstrom, M.D.

Surgery Physician · Riverside, CA

Hakan Erik Wahlstrom, M.D. is a surgery physician with a practice address in Riverside, California, and NPI 1801813688, issued on Jul 16, 2006. Check the license (California A37140, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801813688
Name
Hakan Erik Wahlstrom
Credential
M.D.
Primary taxonomy
Surgery Physician 208600000X
License number
A37140 CA
Self-reported in NPPES; status is on the state search
Practice location
4500 Brockton Ave., Riverside, CA 92501
Phone
(951) 275-9000
Enumerated
Jul 16, 2006
Record last updated
Jan 28, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(951) 275-5262
Medicaid ID
00A371400 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Hakan Erik Wahlstrom in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A37140
    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

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86% fewer Medicare Part D claims than the average surgery physician in 2024

20 Medicare Part D claims, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D.

  1. Hakan Wahlstrom20
  2. Specialty average147

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.

Surgery Physician providers in California

There are 3,118 surgery physician records in California.

Other surgery physician records in California

  1. Miriam Abaunza, M.D.Los Angeles, CA1538470778
  2. Hana Abdirahman, MDTemecula, CA1265288112
  3. Sherwin Abdoli, MDPetaluma, CA1508386442
  4. Mhdshafic Abdulkarim, MDOrange, CA1750174249
  5. Sarah Abdulla, M.D.Baldwin Park, CA1699200840
  6. Shoko Abe, M.D.Berkeley, CA1609178136
  7. Stuart Abel, M.D.Los Angeles, CA1750761516
  8. Elliot Abemayor, MDLos Angeles, CA1972527414
  9. Marc Abi Karam, MD, MSPalo Alto, CA1437846508
  10. Ali Abidali, DOGlendora, CA1861888794

Common questions

What is Hakan Erik Wahlstrom, M.D.'s NPI number?

Hakan Erik Wahlstrom, M.D.'s National Provider Identifier (NPI) is 1801813688, issued on Jul 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Hakan Erik Wahlstrom, M.D. located?

The NPPES record lists a practice address at 4500 Brockton Ave., Riverside, CA, 92501. Phone: (951) 275-9000. Providers update this record themselves, so call before visiting.

How can I verify Hakan Erik Wahlstrom, M.D.'s license?

NPPES lists California license number A37140, 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 Hakan Erik Wahlstrom, M.D. prescribe under Medicare Part D?

In 2024, Hakan Erik Wahlstrom, M.D. had 20 Medicare Part D claims; the average among surgery physician prescribers was 147. 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.