Doctor profile · Federal record
Dr. Gwynn Patterson, MD
Obstetrics & Gynecology Physician (CMS: Obstetrics/Gynecology) · PH.D. Medical Genetics · Sierra Vista, AZ
- NPI 1134111941
- Accepts Medicare
- 46 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
4990 E Mediterranean Dr, Suite C
Sierra Vista, AZ 856352494
(520) 417-2229
fax (520) 417-2266 - Mailing address
-
4990 E Mediterranean Dr Ste C
Sierra Vista, AZ 856352495
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- January 29, 2026
- Year of graduation
- 1980 — 46 yrs since
- Specialty taxonomy
- 207V00000X — NUCC code
- State license (1)
- Arizona #14904
- Medicaid (2)
- AZ #270348002 · AZ #2700348002
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1134111941. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
282
Distinct HCPCS
6
Medicare allowed
$23,707
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 99 | 70 | $88 | |
G0101 |
Cervical or vaginal cancer screening; pelvic and clinical breast examination | 64 | 64 | $38 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 52 | 30 | $124 | |
Q0091 |
Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory | 40 | 40 | $42 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 14 | 12 | $173 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 13 | 13 | $161 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 39. This provider delivers 7.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
101
Patients
26
Total drug cost
$8,462
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Estradiol | Generic | 41 | 26 | $4,470 |
| Progesterone (Progesterone, Micronized) | Brand | 23 | 0 | $1,426 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 13 | 0 | $670 |
| Estradiol (Twice Weekly) (Estradiol) | Brand | 12 | 0 | $1,722 |
| Imipramine Hcl | Generic | 12 | 0 | $174 |
Frequently asked questions
What is Dr. Gwynn Patterson's medical specialty?
Dr. Gwynn Patterson practices Obstetrics & Gynecology Physician in Sierra Vista, AZ.
Where does Dr. Gwynn Patterson practice?
Dr. Gwynn Patterson practices at 4990 E Mediterranean Dr, Sierra Vista, AZ 856352494. Office phone: 5204172229.
What is Dr. Gwynn Patterson's NPI?
Dr. Gwynn Patterson's National Provider Identifier (NPI) is 1134111941, issued by NPPES.
Does Dr. Gwynn Patterson accept Medicare assignment?
Yes. Dr. Gwynn Patterson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gwynn Patterson commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Cervical or vaginal cancer screening; pelvic and clinical breast examination (HCPCS G0101); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.