Dean John Nickles, MD
Internal Medicine Physician · Emeryville, CA
Dean John Nickles, MD is an internal medicine physician with a practice address in Emeryville, California, and NPI 1255390050, issued on Mar 21, 2006. Check the license (California G44039, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dean John Nickles
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G44039 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5800 Hollis St, Emeryville, CA 94608
- Phone
- (510) 806-2100
- Enumerated
- Mar 21, 2006
- Record last updated
- Apr 22, 2024
- Fax
- (510) 806-2548
- Medicare enrollment
- Enrolled (PECOS I20080711000250); accepts Medicare assignment
- Medical or professional school
- West Virginia University School Of Medicine, 1975
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 5800 Hollis St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Julia Fellows, PA-CPhysician Assistant1568970838
- Victoria He, PHARM.D.Pharmacist1508207671
- Cory Hillis, AUDAudiologist1275151979
Verify Dean John Nickles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G44039Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,805 Medicare Part D claims for 592 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 59 claims were for opioids.
Most prescribed
- Atorvastatin Calcium728 claims
- Amlodipine Besylate482 claims
- Lisinopril376 claims
- Losartan Potassium293 claims
- Hydrochlorothiazide251 claims
- Levothyroxine Sodium209 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 3 group practices
- Center For Physical Rehabilitation And Therapy LPGrand Rapids, MI
- Center For Physical Rehabilitation IncGrand Rapids, MI
- University Healthcare AllianceMenlo Park, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dean John Nickles among 17,696 internal medicine physician records in California
Dean John Nickles, MD 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1975 · 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).
24 internal medicine physician records list a practice address in Emeryville
They are 24 of the 703 NPPES records with a practice address in Emeryville, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Emeryville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Clay Angel, M.D.Emeryville, CA 946081477522548
- Nelson Bunin, MDEmeryville, CA 946081508812363
- Jose Camaro, M.D.Emeryville, CA 946081679532808
- Janet Ewing, MDEmeryville, CA 946081316987027
- Kou-Ying Hsieh, M.D.Emeryville, CA 946081447208731
- Curtis Johnson, M.D.Emeryville, CA 946081336118421
- Brian Roberts, M.D.Emeryville, CA 946081831158120
- John Russell, M.D.Emeryville, CA 946081689634958
Common questions
What is Dean John Nickles, MD's NPI number?
Dean John Nickles, MD's National Provider Identifier (NPI) is 1255390050, issued on Mar 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dean John Nickles, MD located?
The NPPES record lists a practice address at 5800 Hollis St, Emeryville, CA, 94608. Phone: (510) 806-2100. Providers update this record themselves, so call before visiting.
How can I verify Dean John Nickles, MD's license?
NPPES lists California license number G44039, 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 Dean John Nickles, MD prescribe under Medicare Part D?
In 2024, Dean John Nickles, MD had 6,805 Medicare Part D claims for 592 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.