Randy E. Bergen, MD
Pediatric Infectious Diseases Physician · Walnut Creek, CA
Randy E. Bergen, MD is a pediatric infectious diseases physician with a practice address in Walnut Creek, California, and NPI 1316025497, issued on Nov 2, 2006. Check the license (California G52916, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Randy E. Bergen
- Credential
- MD
- Primary taxonomy
- Pediatric Infectious Diseases Physician 2080P0208X
- License number
- G52916 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1425 S Main St, Walnut Creek, CA 94596
- Phone
- (925) 295-4000
- Enumerated
- Nov 2, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00G529160 CA
- Entity
- Type 1 · individual
8 nearest pediatric infectious diseases physician records → All 161 in California → Look up another NPI →
Also registered at 1425 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Peter Ackerman, MDEmergency Medicine Physician1427435023
- Aaron Mark Acosta, DOEmergency Medicine Physician1538789987
- Basil Adad, MDOtolaryngology Physician1487732574
- Derek Ailes, M.D.Emergency Medical Services (Emergency Medicine) Physician1992001804
Verify Randy E. Bergen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G52916Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 100% of the cost of the top drugs
22 Medicare Part D claims for 22 beneficiaries, against an average of 165 among the 111 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Typhim Vi11 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.
Randy E. Bergen among 161 pediatric infectious diseases physician records in California
Randy E. Bergen, MD is one of 161 pediatric infectious diseases physician records with a practice address in California. 48% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 57% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileNo · 30% of these records are
- Record last updated2007 · 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 2080P0208X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Infectious Diseases Physician providers in California
There are 161 pediatric infectious diseases physician records in California.
All 161 in California → Every provider in Walnut Creek → Pediatric Infectious Diseases Physician nationwide →
The 8 pediatric infectious diseases physician records with the nearest ZIP codes
- Dan Granoff, M.D.Oakland, CA 946091609131697
- Charlotte Hsieh, M.D.Oakland, CA 946091093745630
- Brian Lee, M.D.Oakland, CA 946091417987033
- Ann Petru, M.D.Oakland, CA 946091568490878
- Prachi Singh, D.O.Oakland, CA 946091720346323
- Anh Vo, MDOakland, CA 946091912536608
- Francis Crosson, M.D.Oakland, CA 946121629205679
- Arnd Herz, M.D.Hayward, CA 945451790835510
Common questions
What is Randy E. Bergen, MD's NPI number?
Randy E. Bergen, MD's National Provider Identifier (NPI) is 1316025497, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Randy E. Bergen, MD located?
The NPPES record lists a practice address at 1425 S Main St, Walnut Creek, CA, 94596. Phone: (925) 295-4000. Providers update this record themselves, so call before visiting.
How can I verify Randy E. Bergen, MD's license?
NPPES lists California license number G52916, 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 Randy E. Bergen, MD prescribe under Medicare Part D?
In 2024, Randy E. Bergen, MD had 22 Medicare Part D claims for 22 beneficiaries; the average among pediatric infectious diseases physician prescribers was 165. 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.