NPPES file of Aug 9, 2026

Marilyn Kwolek, MD

Specialist · Danville, CA

Marilyn Kwolek, MD is a specialist with a practice address in Danville, California, and NPI 1700936150, issued on Jan 10, 2007. Check the license with the California board that licenses this profession; 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
1700936150
Name
Marilyn Kwolek
Credential
MD
Primary taxonomy
Specialist 174400000X
License number
C41932 IA
Self-reported in NPPES; status is on the state search
Practice location
917 San Ramon Valley Blvd, Danville, CA 94526
Phone
(925) 838-8677
Enumerated
Jan 10, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(925) 685-8750
Medicare enrollment
Enrolled (PECOS I20121005000077); accepts Medicare assignment
Medical or professional school
University Of Iowa, Rj & L Carver College Of Medicine, 1981
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.
Download card Updates feed

Also registered at 917 San Ramon Valley Blvd

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

  1. I-Pei Hodge, L.AC.Acupuncturist1801268289
  2. Julia Westcott, D.C.Sports Physician Chiropractor1497945802

Verify Marilyn Kwolek in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
Find 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

45% fewer Medicare Part D claims than the average specialist in 2024

760 Medicare Part D claims for 340 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.

  1. Marilyn Kwolek760
  2. Specialty average1,380

Most prescribed

  1. Clobetasol Propionate152 claims
  2. Doxycycline Hyclate54 claims
  3. Fluorouracil54 claims
  4. Mupirocin39 claims
  5. Valacyclovir36 claims
  6. Imiquimod33 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): 0 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 score0.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

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

Industry payments in 2024: $213.96

16 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Marilyn Kwolek$213.96
  2. Specialty average$4,760.79

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Marilyn Kwolek among 5,749 specialist records in California

Marilyn Kwolek, MD is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.

  • NPI issued2007 · 40% of these records are older, 44% newer
  • In a Medicare fileYes · 30% of these records are
  • In the CMS Doctors and Clinicians fileYes · 19% of these records are
  • Graduated1981 · median 1989 among the 1,075 with a school on file
  • Record last updated2007 · 77% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in California

There are 5,749 specialist records in California.

The 8 specialist records with the nearest ZIP codes

  1. Daniel Jonte, PT, DPTDanville, CA 945261285939371
  2. Elliott Lavey, M.D.Danville, CA 945261275639486
  3. Michelle O'Connor, OTR/L,CHTDanville, CA 945261215187331
  4. Daphne Stoermer, PHYSICAL THERAPISTDanville, CA 945261821161084
  5. Robert Wells, M.D.Danville, CA 945261255647392
  6. Jamilah Elite, MASSAGE THERAPISTCrockett, CA 945251023286994
  7. Peter Brandes, MDPleasant Hill, CA 945231427093913
  8. Candida Brown, M.D.Pleasant Hill, CA 945231649375445

Common questions

What is Marilyn Kwolek, MD's NPI number?

Marilyn Kwolek, MD's National Provider Identifier (NPI) is 1700936150, issued on Jan 10, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Marilyn Kwolek, MD located?

The NPPES record lists a practice address at 917 San Ramon Valley Blvd, Danville, CA, 94526. Phone: (925) 838-8677. Providers update this record themselves, so call before visiting.

How can I verify Marilyn Kwolek, MD's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Marilyn Kwolek, MD prescribe under Medicare Part D?

In 2024, Marilyn Kwolek, MD had 760 Medicare Part D claims for 340 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.

What is Marilyn Kwolek, MD's MIPS final score?

The 2023 MIPS final score is 0 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.