Doctor profile · Federal record

Dr. Margaret Muth, P.A.

Physician Assistant · San Diego, CA

  • NPI 1437169588
  • Accepts Medicare
  • MIPS 73.6 / 100 · 2023
  • 39 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
300 Fir St
San Diego, CA 921012327
(619) 446-1511
fax (619) 557-2770

Credentials & registration

NPPES · NUCC
NPI registered
August 2006 — 20 yrs on file
Profile last updated
April 19, 2017
Year of graduation
1987 — 39 yrs since
Specialty taxonomy
363A00000X — NUCC code
State license (1)
California #PA12124

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1437169588. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
199
Distinct HCPCS
6
Medicare allowed
$14,235
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 96 94 $83
99214 Established patient office or other outpatient visit, 30-39 minutes 28 28 $117
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus 22 22 $35
99203 New patient office or other outpatient visit, 30-44 minutes 21 21 $100
81003 Automated urinalysis test 19 19 $2
36415 Insertion of needle into vein for collection of blood sample 13 13 $8

In context: peer comparison

Among 93 peers in San Diego Physician Assistant, average services per provider: 95. This provider delivers 2.1× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
71
Patients
70
Total drug cost
$963
Drug Type Claims Patients Total cost
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 24 24 $237
Doxycycline Hyclate Generic 24 24 $475
Cephalexin Generic 23 22 $251

Frequently asked questions

Auto-generated from federal data
What is Dr. Margaret Muth's medical specialty?
Dr. Margaret Muth practices Physician Assistant in San Diego, CA.
Where does Dr. Margaret Muth practice?
Dr. Margaret Muth practices at 300 Fir St, San Diego, CA 921012327. Office phone: 6194461511.
What is Dr. Margaret Muth's NPI?
Dr. Margaret Muth's National Provider Identifier (NPI) is 1437169588, issued by NPPES.
Does Dr. Margaret Muth accept Medicare assignment?
Yes. Dr. Margaret Muth accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaret Muth 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); Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus (HCPCS 87426). Source: CMS Medicare Physician & Other Practitioners file.