NPPES file of Aug 9, 2026

Quyen Dao, M.D.

Obesity Medicine (Internal Medicine) Physician · Tustin, CA

Quyen Dao, M.D. is an obesity medicine (internal medicine) physician with a practice address in Tustin, California, and NPI 1932305034, issued on Jun 25, 2007. Check the license (California A85506, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1932305034
Name
Quyen Dao
Credential
M.D.
Primary taxonomy
Obesity Medicine (Internal Medicine) Physician 207RB0002X
License number
A85506 CA
Self-reported in NPPES; status is on the state search
Practice location
17542 17TH St, Tustin, CA 92780
Phone
(714) 835-9550
Enumerated
Jun 25, 2007
Record last updated
Apr 22, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20060224000709); accepts Medicare assignment
Medical or professional school
University Of California, San Diego School Of Medicine, 2002
Telehealth
Offers telehealth (CMS)
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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8 nearest obesity medicine (internal medicine) physician records → All 17 in California → Look up another NPI →

Also registered at 17542 17TH St

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

  1. John AlexanderCase Manager/Care Coordinator1598977647
  2. Angelica Bon, LCSWMental Health Counselor1083916860
  3. Haley LounsburySpeech-Language Pathologist1447626247
  4. Amish Shah, D.O., M.P,H,Geriatric Medicine (Internal Medicine) Physician1851531768

Verify Quyen Dao in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A85506    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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Quyen Dao among 17 obesity medicine (internal medicine) physician records in California

Quyen Dao, M.D. is one of 17 obesity medicine (internal medicine) physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 29% of them.

  • NPI issued2007 · 29% of these records are older, 47% newer
  • In a Medicare fileNo · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 41% of these records are
  • Record last updated2015 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RB0002X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obesity Medicine (Internal Medicine) Physician providers in California

There are 17 obesity medicine (internal medicine) physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 17 in California → Every provider in Tustin → Obesity Medicine (Internal Medicine) Physician nationwide →

The 8 obesity medicine (internal medicine) physician records with the nearest ZIP codes

  1. Harpreet Singh, MDOxnard, CA 930301942258124
  2. Eduardo Grunvald, M.DSan Diego, CA 921031497791339
  3. Arthur Aronson, M.D.San Diego, CA 921011780030122
  4. Sooji Rugh, M.D.Mountain View, CA 940431770799538
  5. Jill Blickley, DOSan Francisco, CA 941041730126152
  6. Randall Caldron, MDWest Hills, CA 913071053475822
  7. Viktoriya Yanchuk, D.O.West Hills, CA 913071932587169
  8. Nicole Grant, MDPalo Alto, CA 943041902007198

Common questions

What is Quyen Dao, M.D.'s NPI number?

Quyen Dao, M.D.'s National Provider Identifier (NPI) is 1932305034, issued on Jun 25, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Quyen Dao, M.D. located?

The NPPES record lists a practice address at 17542 17TH St, Tustin, CA, 92780. Phone: (714) 835-9550. Providers update this record themselves, so call before visiting.

How can I verify Quyen Dao, M.D.'s license?

NPPES lists California license number A85506, 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.