Doctor profile · Federal record

Dr. Dean Nickles, MD

Internal Medicine Physician (CMS: Internal Medicine) · Critical Care Medicine (Internal Medicine) Physician · Emeryville, CA

  • NPI 1255390050
  • Accepts Medicare
  • 51 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
5800 Hollis St
Emeryville, CA 946082016
(510) 806-2100
fax (510) 806-2548
Additional location
350 30Th St, Suite 320
Oakland, CA 946093424
(510) 465-6700
fax (510) 465-7765

Credentials & registration

NPPES · NUCC
NPI registered
March 2006 — 20 yrs on file
Profile last updated
April 22, 2024
Year of graduation
1975 — 51 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #G44039

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1255390050. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,209
Distinct HCPCS
5
Medicare allowed
$118,858
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 634 386 $74
99214 Established patient office or other outpatient visit, 30-39 minutes 281 179 $109
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 256 256 $153
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and 20 19 $63
G0179 Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a 18 14 $51

In context: peer comparison

Among 7 peers in Emeryville Internal Medicine Physician, average services per provider: 143. This provider delivers 8.5× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
3,390
Patients
974
Total drug cost
$260,419
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 743 221 $8,628
Amlodipine Besylate Generic 511 145 $4,019
Lisinopril Generic 390 110 $3,387
Losartan Potassium Generic 289 85 $4,679
Hydrochlorothiazide Generic 258 75 $1,825
Levothyroxine Sodium Generic 240 64 $4,760
Tamsulosin Hcl Generic 123 37 $2,919
Rosuvastatin Calcium Generic 120 39 $2,131
Metoprolol Succinate Generic 116 35 $2,552
Zolpidem Tartrate Generic 112 37 $897

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Dean Nickles's medical specialty?
Dr. Dean Nickles practices Internal Medicine Physician in Emeryville, CA.
Where does Dr. Dean Nickles practice?
Dr. Dean Nickles practices at 5800 Hollis St, Emeryville, CA 946082016. Office phone: 5108062100.
What is Dr. Dean Nickles's NPI?
Dr. Dean Nickles's National Provider Identifier (NPI) is 1255390050, issued by NPPES.
Does Dr. Dean Nickles accept Medicare assignment?
Yes. Dr. Dean Nickles accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Dean Nickles commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.