Ana Rodriguez Fahrni, M.D.
NPI 1639335995 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ana Rodriguez Fahrni, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1639335995).
Provider details
- NPI number
- 1639335995
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125051915 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 146 | 66 |
| Exemestane | 29 | 14 |
| Palbociclibbrand: Ibrance | 18 | — |
| Dexamethasone | 13 | — |
| Lidocaine/Prilocainebrand: Lidocaine-Prilocaine | 13 | — |
| Prochlorperazine Maleate | 13 | — |
| Letrozole | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-08-05
- Last updated
- 2022-02-11
Frequently asked questions
- What is Ana Rodriguez Fahrni's NPI number?
- Ana Rodriguez Fahrni's National Provider Identifier (NPI) is 1639335995, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ana Rodriguez Fahrni's specialty?
- Ana Rodriguez Fahrni is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ana Rodriguez Fahrni located?
- Ana Rodriguez Fahrni's practice location on file with NPPES is 251 E Huron St, Chicago, IL 60611-2908.
- What is Ana Rodriguez Fahrni's phone number?
- The practice phone number listed in the NPPES registry for Ana Rodriguez Fahrni is (312) 926-2000.
- Does Ana Rodriguez Fahrni accept Medicare?
- Ana Rodriguez Fahrni is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ana Rodriguez Fahrni's NPI active?
- Yes — Ana Rodriguez Fahrni's NPI (1639335995) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.