Rachel Fishman Oiknine, M.D.
NPI 1003840349 · Endocrinology, Diabetes & Metabolism Physician · Chesterfield, MO
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachel Fishman Oiknine, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Chesterfield, MO (NPI 1003840349).
Provider details
- NPI number
- 1003840349
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 217339 (MO)
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
1,515 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 | 364 | $122 |
| Thyroid Hormone, T3 Measurement, Total84480 | 218 | $14 |
| Thyroxine (thyroid Chemical), Free84439 | 217 | $9 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 217 | $16 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 128 | $60 |
| Vitamin D-3 Level82306 | 98 | $28 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 539 | 131 |
| Levothyroxine Sodiumbrand: Synthroid | 384 | 91 |
| Alendronate Sodium | 41 | 11 |
| Ergocalciferol (vitamin D2)brand: Vitamin D2 | 33 | 12 |
| Liothyronine Sodium | 25 | — |
| Methimazole | 23 | — |
| Calcitriol | 21 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$451 across 23 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
- 2006-07-11
- Last updated
- 2011-09-30
Frequently asked questions
- What is Rachel Fishman Oiknine's NPI number?
- Rachel Fishman Oiknine's National Provider Identifier (NPI) is 1003840349, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachel Fishman Oiknine's specialty?
- Rachel Fishman Oiknine is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Rachel Fishman Oiknine located?
- Rachel Fishman Oiknine's practice location on file with NPPES is 222 S Woods Mill Rd, Chesterfield, MO 63017-3625.
- What is Rachel Fishman Oiknine's phone number?
- The practice phone number listed in the NPPES registry for Rachel Fishman Oiknine is (314) 469-6224.
- Does Rachel Fishman Oiknine accept Medicare?
- Rachel Fishman Oiknine is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachel Fishman Oiknine's NPI active?
- Yes — Rachel Fishman Oiknine's NPI (1003840349) is active in the NPPES registry as of the last update on 2011-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.