Mariann Alperin, M.D., M.S.
NPI 1033266879 · Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician · Encinitas, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariann Alperin, M.D., M.S. is a Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician provider in Encinitas, CA (NPI 1033266879).
Provider details
- NPI number
- 1033266879
- Entity type
- Individual
- Primary specialty
- Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.S.
- Sex
- Female
- Sole proprietor
- No
- License
- A102879 (CA)
Specialties & taxonomies
- Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) PhysicianPrimary207VF0040XLicense A102879 (CA)
Allopathic & Osteopathic Physicians
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
280 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 | 70 | $137 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 61 | $13 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 58 | $177 |
| Insertion of Temporary Bladder Tube51701 | 35 | $48 |
| Pelvic Exam99459 | 23 | $26 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 19 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 94 | 50 |
| Mirabegronbrand: Myrbetriq | 64 | 25 |
| Vibegronbrand: Gemtesa | 31 | 11 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 23 | 15 |
| Estradiolbrand: Yuvafem | 23 | — |
| Methenamine Hippurate | 22 | — |
| Estradiolbrand: Estring | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$104 across 4 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
Additional practice locations (1)
- 4520 Executive DrSan Diego, CA 92121-3018Phone: (800) 926-8273Fax: (888) 539-8781
Registry dates
- Enumerated
- 2007-01-04
- Last updated
- 2025-11-21
- Certified
- 2025-11-21
Frequently asked questions
- What is Mariann Alperin's NPI number?
- Mariann Alperin's National Provider Identifier (NPI) is 1033266879, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariann Alperin's specialty?
- Mariann Alperin is listed in the NPPES registry with a primary specialty of Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician (Allopathic & Osteopathic Physicians).
- Where is Mariann Alperin located?
- Mariann Alperin's practice location on file with NPPES is 1200 Garden View Rd, Encinitas, CA 92024-2477.
- What is Mariann Alperin's phone number?
- The practice phone number listed in the NPPES registry for Mariann Alperin is (800) 926-8273.
- Does Mariann Alperin accept Medicare?
- Mariann Alperin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariann Alperin's NPI active?
- Yes — Mariann Alperin's NPI (1033266879) is active in the NPPES registry as of the last update on 2025-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.