Amanda Simsiman, MD
NPI 1528132560 · Obstetrics & Gynecology Physician · Oceanside, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amanda Simsiman, MD is a Obstetrics & Gynecology Physician provider in Oceanside, CA (NPI 1528132560).
Provider details
- NPI number
- 1528132560
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G80335 (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
565 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) |
|---|---|---|
| Insertion of Lower Leg Neurostimulator Electrode64566 | 162 | $132 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 77 | $97 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 69 | $13 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 67 | $60 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 34 | $188 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 90 | 47 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 26 | 16 |
| Estradiolbrand: Yuvafem | 20 | — |
| Fluconazole | 16 | 11 |
| Nitrofurantoin Macrocrystalbrand: Nitrofurantoin | 14 | — |
| Metronidazole | 12 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$289 across 7 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
- 2006-11-20
- Last updated
- 2021-05-25
- Certified
- 2021-05-25
Frequently asked questions
- What is Amanda Simsiman's NPI number?
- Amanda Simsiman's National Provider Identifier (NPI) is 1528132560, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amanda Simsiman's specialty?
- Amanda Simsiman is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Amanda Simsiman located?
- Amanda Simsiman's practice location on file with NPPES is 4318 Mission Ave Ste a, Oceanside, CA 92057-6541.
- What is Amanda Simsiman's phone number?
- The practice phone number listed in the NPPES registry for Amanda Simsiman is (858) 395-9669.
- Does Amanda Simsiman accept Medicare?
- Amanda Simsiman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amanda Simsiman's NPI active?
- Yes — Amanda Simsiman's NPI (1528132560) is active in the NPPES registry as of the last update on 2021-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.