NPPES file of Aug 9, 2026

Gregory Ming Tiao, MD

Surgery Physician · Palo Alto, CA

Gregory Ming Tiao, MD is a surgery physician with a practice address in Palo Alto, California, and NPI 1083794036, issued on Oct 16, 2006. Check the license (California G84888, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083794036
Name
Gregory Ming Tiao
Credential
MD
Primary taxonomy
Surgery Physician 208600000X
License numbers
G84888 CA
01081810A IN
52167 KY
35.065006 OH
Self-reported in NPPES; status is on the state search
Practice location
725 Welch RD, Palo Alto, CA 94304
Phone
(650) 497-8000
Enumerated
Oct 16, 2006
Record last updated
Dec 15, 2025
Medicare enrollment
Enrolled (PECOS I20200102000420); accepts Medicare assignment
Medical or professional school
University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1990
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 725 Welch RD

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

  1. Shayda Abadi, NPNurse Practitioner1316745540
  2. Natasha AbadillaStudent in an Organized Health Care Education/Training Program1194306928
  3. Alexandra Abbott, MDPediatrics Physician1760018675
  4. Steven Abboud, MDAnesthesiology Physician1619364908
  5. Ali Abdelhafiz Abdelsamea, MDPediatrics Physician1699390104
  6. Alireza Abdollah Shamshirsaz, M.D.Obstetrics & Gynecology Physician1881804235

Verify Gregory Ming Tiao in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G84888
    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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Bills Medicare through one group practice

  1. Children's Hospital Medical CenterCrestview Hills, KY

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

Gregory Ming Tiao among 3,118 surgery physician records in California

Gregory Ming Tiao, MD is one of 3,118 surgery physician records with a practice address in California. 75% 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 6% of them.

  • NPI issued2006 · 6% of these records are older, 55% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated1990 · median 2003 among the 1,901 with a school on file
  • Record last updated2025 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in California

There are 3,118 surgery physician records in California.

The 8 surgery physician records with the nearest ZIP codes

  1. James Badger, M.D.Palo Alto, CA 943041255360863
  2. Frederick Dirbas, MDPalo Alto, CA 943041154457091
  3. Dan Eisenberg, M.D.Palo Alto, CA 943041437371978
  4. Carlos Esquivel, M.D., PH.D.Palo Alto, CA 943041942343504
  5. Brooke Gurland, MDPalo Alto, CA 943041891889101
  6. Mary Hawn, MDPalo Alto, CA 943041194751271
  7. Mardi Karin, M.D.Palo Alto, CA 943041275568388
  8. Electron Kebebew, MDPalo Alto, CA 943041972567246

Common questions

What is Gregory Ming Tiao, MD's NPI number?

Gregory Ming Tiao, MD's National Provider Identifier (NPI) is 1083794036, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Ming Tiao, MD located?

The NPPES record lists a practice address at 725 Welch RD, Palo Alto, CA, 94304. Phone: (650) 497-8000. Providers update this record themselves, so call before visiting.

How can I verify Gregory Ming Tiao, MD's license?

NPPES lists California license number G84888, 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.

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.