David Nah, DO
Internal Medicine Physician · Laguna Hills, CA
David Nah, DO is an internal medicine physician with a practice address in Laguna Hills, California, and NPI 1477847127, issued on May 29, 2011. Check the license (California 20A20968, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Nah
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A20968 CA
Self-reported in NPPES; status is on the state search - Practice location
- 25431 Cabot RD Ste 118, Laguna Hills, CA 92653
- Phone
- (949) 362-8877
- Enumerated
- May 29, 2011
- Record last updated
- May 8, 2024
- Medicare enrollment
- Enrolled (PECOS I20240509003729); accepts Medicare assignment
- Medical or professional school
- Pacific Nw Un Of Hs, Col Of Osteopathic Medicine, 2013
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 25431 Cabot RD Ste 118
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amy Brunsting, NP-CFamily Medicine Physician1164907267
- Wenli Li, FNPFamily Nurse Practitioner1033798467
- Daniel Parker, DCChiropractor1700461761
- Stephanie Thomas, APRNFamily Nurse Practitioner1316654098
- Camtu Tonnu, FNP-CFamily Nurse Practitioner1811503675
Verify David Nah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A20968Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
40 Medicare Part D claims for 22 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Performance Health Medical Group, IncLaguna Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Nah among 17,696 internal medicine physician records in California
David Nah, DO is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 66% of them.
- NPI issued2011 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2013 · median 2004 among the 11,065 with a school on file
- Record last updated2024 · 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 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 internal medicine physician records list a practice address in Laguna Hills
They are 56 of the 2,069 NPPES records with a practice address in Laguna Hills, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Laguna Hills → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Humberto Boccardo, M.D.Laguna Hills, CA 926531689679458
- Arthur Daigneault, MDLaguna Hills, CA 926531609845361
- Raymond Fernandez, MDLaguna Hills, CA 926531629039532
- Ali Ghazvini, M.D.Laguna Hills, CA 926531104865153
- Brian HenryLaguna Hills, CA 926531629047824
- Robert Lazatin, M.D.Laguna Hills, CA 926531700865755
- Alan Lo, MDLaguna Hills, CA 926531982683637
- Lawrence Luppi, M.D.Laguna Hills, CA 926531952356727
Common questions
What is David Nah, DO's NPI number?
David Nah, DO's National Provider Identifier (NPI) is 1477847127, issued on May 29, 2011. An NPI identifies a provider in billing; it is not a license.
Where is David Nah, DO located?
The NPPES record lists a practice address at 25431 Cabot RD Ste 118, Laguna Hills, CA, 92653. Phone: (949) 362-8877. Providers update this record themselves, so call before visiting.
How can I verify David Nah, DO's license?
NPPES lists California license number 20A20968, 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.
How much does David Nah, DO prescribe under Medicare Part D?
In 2024, David Nah, DO had 40 Medicare Part D claims for 22 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.