Sarah Zielsdorf, M.D., M.S.
NPI 1679849871 · Internal Medicine Physician · Maywood, IL
Sarah Zielsdorf, M.D., M.S. is a Internal Medicine Physician provider in Maywood, IL (NPI 1679849871).
Provider details
- NPI number
- 1679849871
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.S.
- Sex
- Female
- Sole proprietor
- No
- License
- BF 4649604-A 971 (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
14 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 |
|---|---|---|
| Liothyronine Sodium | 75 | 24 |
| Thyroid,porkbrand: Armour Thyroid | 19 | — |
| Levothyroxine Sodiumbrand: Synthroid | 17 | — |
| Progesterone, Micronizedbrand: Progesterone | 15 | — |
| Thyroid,porkbrand: NP Thyroid | 14 | — |
| Estradiol | 13 | — |
| Levothyroxine Sodiumbrand: Tirosint |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-04-02
- Last updated
- 2015-11-06
Frequently asked questions
- What is Sarah Zielsdorf's NPI number?
- Sarah Zielsdorf's National Provider Identifier (NPI) is 1679849871, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Zielsdorf's specialty?
- Sarah Zielsdorf is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sarah Zielsdorf located?
- Sarah Zielsdorf's practice location on file with NPPES is 2160 S 1st Ave Rm 7609, Maywood, IL 60153-3328.
- What is Sarah Zielsdorf's phone number?
- The practice phone number listed in the NPPES registry for Sarah Zielsdorf is (708) 216-8757.
- Is Sarah Zielsdorf's NPI active?
- Yes — Sarah Zielsdorf's NPI (1679849871) is active in the NPPES registry as of the last update on 2015-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.