NPPES file of Aug 9, 2026

Caroline Guevara Yap, MD

Anatomic Pathology & Clinical Pathology Physician · Vallejo, CA

Caroline Guevara Yap, MD is an anatomic pathology & clinical pathology physician with a practice address in Vallejo, California, and NPI 1679580351, issued on Aug 2, 2006. Check the license 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
1679580351
Name
Caroline Guevara Yap
Credential
MD
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License number
10984 NV
Self-reported in NPPES; status is on the state search
Practice location
2801 Olivewood LN, Vallejo, CA 94591
Phone
(707) 688-1833
Enumerated
Aug 2, 2006
Record last updated
Sep 20, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(707) 554-6883
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 Caroline Guevara Yap in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of CaliforniaCheck 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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Industry payments in 2024: $21.89

1 payment: food and beverage; the largest payer was Intuitive Surgical, Inc. The 2,607 providers of this specialty with any payment received $3,565.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Caroline Yap$21.89
  2. Specialty average$3,565.00

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

Caroline Guevara Yap among 1,554 anatomic pathology & clinical pathology physician records in California

Caroline Guevara Yap, MD is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% 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, 57% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileNo · 57% of these records are
  • Record last updated2007 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in California

There are 1,554 anatomic pathology & clinical pathology physician records in California.

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Ahchean Chen, MDVallejo, CA 945891548202773
  2. James Krasno, MDVallejo, CA 945891366401549
  3. Javi Hartenstine, D.O.Pleasanton, CA 945881932462413
  4. Robert Luo, M.D.Pleasanton, CA 945881376730564
  5. Khaingsoe Win, M.D.Pleasanton, CA 945881336362920
  6. Lynne Finley, M.D.Walnut Creek, CA 945961609963164
  7. Nicholas Byrne, MDWalnut Creek, CA 945981710191325
  8. Jeffrey Curtis, MDWalnut Creek, CA 945981215018528

Common questions

What is Caroline Guevara Yap, MD's NPI number?

Caroline Guevara Yap, MD's National Provider Identifier (NPI) is 1679580351, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Caroline Guevara Yap, MD located?

The NPPES record lists a practice address at 2801 Olivewood LN, Vallejo, CA, 94591. Phone: (707) 688-1833. Providers update this record themselves, so call before visiting.

How can I verify Caroline Guevara Yap, MD's license?

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.

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.