NPPES file of Aug 9, 2026

Karen Jean Fong, MD

Otolaryngology Physician · Walnut Creek, CA

Karen Jean Fong, MD is an otolaryngology physician with a practice address in Walnut Creek, California, and NPI 1548275068, issued on Jul 31, 2006. Check the license (California A52969, 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
1548275068
Name
Karen Jean Fong
Credential
MD
Primary taxonomy
Otolaryngology Physician 207Y00000X
License number
A52969 CA
Self-reported in NPPES; status is on the state search
Practice location
2637 Shadelands Dr, Walnut Creek, CA 94598
Phone
(925) 300-4680
Enumerated
Jul 31, 2006
Record last updated
May 1, 2025
Fax
(925) 906-9780
Medicare enrollment
Enrolled (PECOS I20080611000706); accepts Medicare assignment
Medical or professional school
Baylor College Of Medicine, 1992
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 2637 Shadelands Dr

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

  1. Anita Anand, NPFamily Nurse Practitioner1023993102
  2. Stacyann Andaya, NPFamily Nurse Practitioner1649893660
  3. Audrey Arzamendi, M.D.Endocrinology, Diabetes & Metabolism Physician1508159567
  4. Anthony Bernens, MDInternal Medicine Physician1215983440
  5. Jennifer Chan, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1265634687
  6. Heidi Chang, MDObstetrics & Gynecology Physician1649681982

Verify Karen Jean Fong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A52969
    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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39% fewer Medicare Part D claims than the average otolaryngology physician in 2024

330 Medicare Part D claims for 122 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Karen Fong330
  2. Specialty average541

Most prescribed

  1. Ipratropium Bromide75 claims
  2. Azelastine Hcl50 claims
  3. Fluticasone Propionate38 claims
  4. Prednisolone Acetate30 claims
  5. Mupirocin21 claims
  6. Montelukast Sodium19 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.

The MIPS final score for 2023 (Medicare payment program): 91.9 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score85.3
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

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

Industry payments in 2024: $326.07

12 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 6,429 providers of this specialty with any payment received $1,922.50 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Karen Fong$326.07
  2. Specialty average$1,922.50

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. Bass Medical GroupAlamo, CA

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

Karen Jean Fong among 1,212 otolaryngology physician records in California

Karen Jean Fong, MD is one of 1,212 otolaryngology physician records with a practice address in California. 80% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 52% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 67% of these records are
  • Graduated1992 · median 2004 among the 818 with a school on file
  • Record last updated2025 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Otolaryngology Physician providers in California

There are 1,212 otolaryngology physician records in California.

The 8 otolaryngology physician records with the nearest ZIP codes

  1. Erica Bennett, MDWalnut Creek, CA 945981164438875
  2. Pamela Bohrer, MDWalnut Creek, CA 945981497839476
  3. Kyle Hannabass, M.D.Walnut Creek, CA 945981154784866
  4. Abraham Hsieh, MDWalnut Creek, CA 945981679520076
  5. Jeehong Kim, M.DWalnut Creek, CA 945981629423140
  6. Benjamin Loos, MDWalnut Creek, CA 945981457441214
  7. Michael Murphy, MDWalnut Creek, CA 945981013964410
  8. Timothy Scott, MDWalnut Creek, CA 945981760439160

Common questions

What is Karen Jean Fong, MD's NPI number?

Karen Jean Fong, MD's National Provider Identifier (NPI) is 1548275068, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Karen Jean Fong, MD located?

The NPPES record lists a practice address at 2637 Shadelands Dr, Walnut Creek, CA, 94598. Phone: (925) 300-4680. Providers update this record themselves, so call before visiting.

How can I verify Karen Jean Fong, MD's license?

NPPES lists California license number A52969, 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 Karen Jean Fong, MD prescribe under Medicare Part D?

In 2024, Karen Jean Fong, MD had 330 Medicare Part D claims for 122 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.

What is Karen Jean Fong, MD's MIPS final score?

The 2023 MIPS final score is 91.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.

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.