Doctor profile · Federal record

Dr. Oluwaseyi Balasire, M.D.

Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Internal Medicine Physician · Castro Valley, CA

  • NPI 1003235243
  • Accepts Medicare
  • 17 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
20103 Lake Chabot RD
Castro Valley, CA 945465305
(510) 727-3256
fax (510) 727-3107
Additional location
1818 Albion St
Nashville, TN 372082918
(615) 341-4000
Additional location
900 E Oak Hill Ave
Knoxville, TN 379174505
(865) 545-8000
Mailing address
400 Chaney RD Apt 307
Smyrna, TN 371672650

Credentials & registration

NPPES · NUCC
NPI registered
April 2014 — 12 yrs on file
Profile last updated
March 7, 2023
Year of graduation
2009 — 17 yrs since
Specialty taxonomy
208M00000X — NUCC code
State licenses (3)
California #A152926 · California #1118626 · Tennessee #56261

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1003235243. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
354
Distinct HCPCS
4
Medicare allowed
$41,820
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 118 44 $112
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 101 99 $172
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 98 35 $74
99239 Hospital discharge day management, more than 30 minutes 37 36 $108

In context: peer comparison

Among 15 peers in this city , average services per provider: 130. This provider delivers 2.7× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
113
Patients
11
Total drug cost
$5,203
Drug Type Claims Patients Total cost
Carvedilol Generic 34 0 $221
Atorvastatin Calcium Generic 33 0 $262
Eliquis (Apixaban) Brand 29 0 $4,482
Pantoprazole Sodium Generic 17 11 $238

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Oluwaseyi Balasire's medical specialty?
Dr. Oluwaseyi Balasire practices Hospitalist Physician in Castro Valley, CA.
Where does Dr. Oluwaseyi Balasire practice?
Dr. Oluwaseyi Balasire practices at 20103 Lake Chabot RD, Castro Valley, CA 945465305. Office phone: 5107273256.
What is Dr. Oluwaseyi Balasire's NPI?
Dr. Oluwaseyi Balasire's National Provider Identifier (NPI) is 1003235243, issued by NPPES.
Does Dr. Oluwaseyi Balasire accept Medicare assignment?
Yes. Dr. Oluwaseyi Balasire accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Oluwaseyi Balasire commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.