NPPES file of Aug 9, 2026

Maggie N. Guan, DMD

Dentist · San Diego, CA

Maggie N. Guan, DMD is a dentist with a practice address in San Diego, California, and NPI 1881383891, issued on May 4, 2023. Check the license (California DDS110127, as entered in NPPES) 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1881383891
Name
Maggie N. Guan
Credential
DMD
Primary taxonomy
Dentist 122300000X
License numbers
DDS110127 CA
2023023286 MO
Self-reported in NPPES; status is on the state search
Practice location
6101 Mission Gorge RD, San Diego, CA 92120
Phone
(619) 272-2271
Enumerated
May 4, 2023
Record last updated
Jun 24, 2024
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 Maggie N. Guan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license DDS110127
    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
Find the California license search

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83% fewer Medicare Part D claims than the average dentist in 2024

15 Medicare Part D claims for 12 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.

  1. Maggie Guan15
  2. Specialty average86

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.

Maggie N. Guan among 14,729 dentist records in California

Maggie N. Guan, DMD is one of 14,729 dentist records with a practice address in California. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 89% of them.

  • NPI issued2023 · 89% of these records are older, 7% newer
  • In a Medicare fileYes · 56% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2024 · 73% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dentist providers in California

There are 14,729 dentist records in California.

The 8 dentist records with the nearest ZIP codes

  1. Stephan Barrington, DDSSan Diego, CA 921201346768231
  2. Chad Brown, DDSSan Diego, CA 921201508966342
  3. Steven Danney, D.D.S.San Diego, CA 921201659459907
  4. Robert Drury, DDSSan Diego, CA 921201427165398
  5. Douglas Grosmark, D.M.D.San Diego, CA 921201730238940
  6. Anas NajmSan Diego, CA 921201730578428
  7. John Neuenswander, D.D.S.San Diego, CA 921201326060799
  8. Peter Rittenhouse, DMDSan Diego, CA 921201083504989

Common questions

What is Maggie N. Guan, DMD's NPI number?

Maggie N. Guan, DMD's National Provider Identifier (NPI) is 1881383891, issued on May 4, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Maggie N. Guan, DMD located?

The NPPES record lists a practice address at 6101 Mission Gorge RD, San Diego, CA, 92120. Phone: (619) 272-2271. Providers update this record themselves, so call before visiting.

How can I verify Maggie N. Guan, DMD's license?

NPPES lists California license number DDS110127, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Maggie N. Guan, DMD prescribe under Medicare Part D?

In 2024, Maggie N. Guan, DMD had 15 Medicare Part D claims for 12 beneficiaries; the average among dentist prescribers was 86. Part D covers Medicare prescriptions only.

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.