Siniva Helliwell, M.D.
NPI 1275561060 · Gynecology Physician · Bakersfield, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siniva Helliwell, M.D. is a Gynecology Physician provider in Bakersfield, CA (NPI 1275561060).
Provider details
- NPI number
- 1275561060
- Entity type
- Individual
- Primary specialty
- Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A82543 (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
190 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 | 91 | $131 |
| Pelvic Exam99459 | 32 | $24 |
| Screening Papanicolaou Smear; Obtaining, Preparing and Conveyance of Cervical Or Vaginal Smear to LaboratoryQ0091 | 22 | $46 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 19 | $40 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 14 | $169 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Progesterone, Micronizedbrand: Progesterone | 60 | — |
| Estradiol | 50 | 19 |
| Estradiolbrand: Estradiol (twice Weekly) | 22 | — |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 20 | 11 |
| Fluconazole | 19 | 13 |
| Alendronate Sodium | 16 | — |
| Levothyroxine Sodiumbrand: Synthroid | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$193 across 11 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
- 2006-06-29
- Last updated
- 2015-11-09
Frequently asked questions
- What is Siniva Helliwell's NPI number?
- Siniva Helliwell's National Provider Identifier (NPI) is 1275561060, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siniva Helliwell's specialty?
- Siniva Helliwell is listed in the NPPES registry with a primary specialty of Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Siniva Helliwell located?
- Siniva Helliwell's practice location on file with NPPES is 8501 Brimhall Rd Ste 300, Bakersfield, CA 93312-2254.
- What is Siniva Helliwell's phone number?
- The practice phone number listed in the NPPES registry for Siniva Helliwell is (661) 410-2942.
- Does Siniva Helliwell accept Medicare?
- Siniva Helliwell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siniva Helliwell's NPI active?
- Yes — Siniva Helliwell's NPI (1275561060) is active in the NPPES registry as of the last update on 2015-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.