Doctor profile · Federal record

Dr. Sonya Ehresmann, M.D.

Internal Medicine Physician (CMS: Internal Medicine) · San Marino, CA

  • NPI 1750533212
  • Accepts Medicare
  • 22 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
375 Huntington Dr Ste G
San Marino, CA 911082357
(626) 441-4231
fax (626) 441-0282

Credentials & registration

NPPES · NUCC
NPI registered
October 2008 — 18 yrs on file
Profile last updated
May 5, 2021
Year of graduation
2004 — 22 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #A100206

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1750533212. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
444
Distinct HCPCS
8
Medicare allowed
$46,719
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 189 112 $100
99214 Established patient office or other outpatient visit, 30-39 minutes 87 72 $141
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 66 66 $144
G0008 Administration of influenza virus vaccine 28 28 $34
90662 Influenza vaccine split virus, preservative free 26 26 $72
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 18 17 $16
99203 New patient office or other outpatient visit, 30-44 minutes 17 17 $124
99212 Established patient office or other outpatient visit, 10-19 minutes 13 13 $63

In context: peer comparison

Among 1 peers in this city , average services per provider: 55. This provider delivers 8.1× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$142
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Amgen Inc. 1 $121.81
Boston Scientific Corporation 1 $20.44

By nature of payment

Food and Beverage
$142

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,356
Patients
458
Total drug cost
$25,440
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 261 86 $5,306
Amlodipine Besylate Generic 256 95 $3,103
Losartan Potassium Generic 137 47 $2,769
Levothyroxine Sodium Generic 115 44 $2,157
Metformin Hcl Generic 95 27 $1,018
Simvastatin Generic 67 23 $788
Rosuvastatin Calcium Generic 57 20 $2,032
Lisinopril Generic 54 21 $754
Irbesartan Generic 51 11 $3,960
Omeprazole Generic 51 17 $760

Frequently asked questions

Auto-generated from federal data
What is Dr. Sonya Ehresmann's medical specialty?
Dr. Sonya Ehresmann practices Internal Medicine Physician in San Marino, CA.
Where does Dr. Sonya Ehresmann practice?
Dr. Sonya Ehresmann practices at 375 Huntington Dr Ste G, San Marino, CA 911082357. Office phone: 6264414231.
What is Dr. Sonya Ehresmann's NPI?
Dr. Sonya Ehresmann's National Provider Identifier (NPI) is 1750533212, issued by NPPES.
Does Dr. Sonya Ehresmann accept Medicare assignment?
Yes. Dr. Sonya Ehresmann accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sonya Ehresmann 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.