Noah J. Friedman, MD
Allergy Physician · San Diego, CA
Noah J. Friedman, MD is an allergy physician with a practice address in San Diego, California, and NPI 1336208933, issued on Dec 8, 2006. Check the license (California G71320, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Noah J. Friedman
- Credential
- MD
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- G71320 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4647 Zion Ave, San Diego, CA 92120
- Phone
- (619) 528-5000
- Enumerated
- Dec 8, 2006
- Record last updated
- Nov 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110106000300); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1986
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 157 in California → Look up another NPI →
Also registered at 4647 Zion Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Noah J. Friedman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G71320Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average allergy physician in 2024
31 Medicare Part D claims for 13 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
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
- Southern California Permanente Medical GroupSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Noah J. Friedman among 157 allergy physician records in California
Noah J. Friedman, MD is one of 157 allergy physician records with a practice address in California. 69% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 31% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated1986 · median 1992 among the 82 with a school on file
- Record last updated2021 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in California
There are 157 allergy physician records in California.
All 157 in California → Every provider in San Diego → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Sandra Christiansen, MDSan Diego, CA 921201568510493
- Reuben Falkoff, MDSan Diego, CA 921201932276763
- Eric Macy, MDSan Diego, CA 921201043379670
- Michael Mellon, MDSan Diego, CA 921201598824104
- Michael Schatz, MDSan Diego, CA 921201225197817
- Robert Zeiger, MDSan Diego, CA 921201639238249
- William Wallace, M.D.San Diego, CA 921261144331513
- Richard Danziger, M.D.San Diego, CA 921311770593196
Common questions
What is Noah J. Friedman, MD's NPI number?
Noah J. Friedman, MD's National Provider Identifier (NPI) is 1336208933, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Noah J. Friedman, MD located?
The NPPES record lists a practice address at 4647 Zion Ave, San Diego, CA, 92120. Phone: (619) 528-5000. Providers update this record themselves, so call before visiting.
How can I verify Noah J. Friedman, MD's license?
NPPES lists California license number G71320, 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 Noah J. Friedman, MD prescribe under Medicare Part D?
In 2024, Noah J. Friedman, MD had 31 Medicare Part D claims for 13 beneficiaries; the average among allergy physician prescribers was 750. 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.