Stephanie Mandelman, M D
NPI 1851315196 · Obstetrics & Gynecology Physician · Westlake Village, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Mandelman, M D is a Obstetrics & Gynecology Physician provider in Westlake Village, CA (NPI 1851315196).
Provider details
- NPI number
- 1851315196
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M D
- Sex
- Female
- Sole proprietor
- Yes
- License
- A68965 (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
19 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
902 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 | 374 | $137 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 226 | $42 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 123 | $177 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 107 | $87 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 35 | $37 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
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 | 95 | 51 |
| Progesterone, Micronizedbrand: Progesterone | 75 | 25 |
| Estradiolbrand: Estradiol (twice Weekly) | 48 | 17 |
| Estradiolbrand: Yuvafem | 39 | 12 |
| Fluconazole | 34 | 26 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 23 | 19 |
| Valacyclovir Hclbrand: Valacyclovir | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,301 across 12 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
- 2006-07-27
- Last updated
- 2012-08-20
Frequently asked questions
- What is Stephanie Mandelman's NPI number?
- Stephanie Mandelman's National Provider Identifier (NPI) is 1851315196, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Mandelman's specialty?
- Stephanie Mandelman is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephanie Mandelman located?
- Stephanie Mandelman's practice location on file with NPPES is 1250 La Venta Dr, Westlake Village, CA 91361-3702.
- What is Stephanie Mandelman's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Mandelman is (805) 496-0880.
- Does Stephanie Mandelman accept Medicare?
- Stephanie Mandelman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Mandelman's NPI active?
- Yes — Stephanie Mandelman's NPI (1851315196) is active in the NPPES registry as of the last update on 2012-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.