Gary Willen, MD
NPI 1700857422 · Obstetrics & Gynecology Physician · Carson City, NV
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Willen, MD is a Obstetrics & Gynecology Physician provider in Carson City, NV (NPI 1700857422).
Provider details
- NPI number
- 1700857422
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G53304 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
176 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 131 | $125 |
| Screening Papanicolaou Smear; Obtaining, Preparing and Conveyance of Cervical Or Vaginal Smear to LaboratoryQ0091 | 23 | $43 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 22 | $38 |
Typical Medicare-allowed amounts for these services range $38–$125 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 93 | 35 |
| Valacyclovir Hclbrand: Valacyclovir | 54 | — |
| Estradiolbrand: Estradiol (twice Weekly) | 50 | 12 |
| Estradiolbrand: Dotti | 35 | — |
| Estradiolbrand: Imvexxy | 34 | — |
| Estrogens, Conjugatedbrand: Premarin | 22 | — |
| Estradiolbrand: Yuvafem | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$263 across 14 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-30
- Last updated
- 2013-03-07
Frequently asked questions
- What is Gary Willen's NPI number?
- Gary Willen's National Provider Identifier (NPI) is 1700857422, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Willen's specialty?
- Gary Willen is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Willen located?
- Gary Willen's practice location on file with NPPES is 961 Mica Dr, Carson City, NV 89705-7269.
- What is Gary Willen's phone number?
- The practice phone number listed in the NPPES registry for Gary Willen is (530) 544-8333.
- Does Gary Willen accept Medicare?
- Gary Willen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Willen's NPI active?
- Yes — Gary Willen's NPI (1700857422) is active in the NPPES registry as of the last update on 2013-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.