Doctor profile · Federal record

Dr. Serene Alexander, D.O.

Obstetrics & Gynecology Physician (CMS: Obstetrics/Gynecology) · Merced, CA

  • NPI 1841555109
  • Accepts Medicare
  • 14 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
797 W Childs Ave
Merced, CA 953416805
(209) 383-5871
fax (209) 383-1402
Additional location
7601 Hospital Dr Ste 220
Sacramento, CA 958235408
(916) 569-8600
fax (916) 368-0815
Mailing address
1910 Customer Care Way
Atwater, CA 953015167

Credentials & registration

NPPES · NUCC
NPI registered
July 2012 — 14 yrs on file
Profile last updated
March 17, 2018
Year of graduation
2012 — 14 yrs since
Specialty taxonomy
207V00000X — NUCC code
State license (1)
California #14603

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1841555109. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
163
Distinct HCPCS
4
Medicare allowed
$15,659
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 111 73 $97
99203 New patient office or other outpatient visit, 30-44 minutes 20 20 $117
99212 Established patient office or other outpatient visit, 10-19 minutes 20 17 $61
58100 Biopsy of lining of uterus 12 12 $111

In context: peer comparison

Among 2 peers in Merced Obstetrics & Gynecology Physician, average services per provider: 33. This provider delivers 4.9× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,252
Transactions
11
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Intuitive Surgical, INC. 6 $1,045.73
Hologic Sales and Service, LLC 2 $148.00
Abbvie INC. 2 $44.09
Exeltis, USA INC. 1 $13.94

By nature of payment

Travel and Lodging
$936
Food and Beverage
$315

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
54
Patients
19
Total drug cost
$7,342
Drug Type Claims Patients Total cost
Estradiol Generic 39 19 $3,133
Premarin (Estrogens, Conjugated) Brand 15 0 $4,209

Frequently asked questions

Auto-generated from federal data
What is Dr. Serene Alexander's medical specialty?
Dr. Serene Alexander practices Obstetrics & Gynecology Physician in Merced, CA.
Where does Dr. Serene Alexander practice?
Dr. Serene Alexander practices at 797 W Childs Ave, Merced, CA 953416805. Office phone: 2093835871.
What is Dr. Serene Alexander's NPI?
Dr. Serene Alexander's National Provider Identifier (NPI) is 1841555109, issued by NPPES.
Does Dr. Serene Alexander accept Medicare assignment?
Yes. Dr. Serene Alexander accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Serene Alexander commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99203); Established patient office or other outpatient visit (HCPCS 99212). Source: CMS Medicare Physician & Other Practitioners file.