Alexandra Herweck, MD, MPH
NPI 1609453257 · Reproductive Endocrinology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexandra Herweck, MD, MPH is a Reproductive Endocrinology Physician provider in Chicago, IL (NPI 1609453257).
Provider details
- NPI number
- 1609453257
- Entity type
- Individual
- Primary specialty
- Reproductive Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Female
- Sole proprietor
- No
- License
- 036.174659 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-28
- Last updated
- 2025-11-20
- Certified
- 2025-11-20
Frequently asked questions
- What is Alexandra Herweck's NPI number?
- Alexandra Herweck's National Provider Identifier (NPI) is 1609453257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexandra Herweck's specialty?
- Alexandra Herweck is listed in the NPPES registry with a primary specialty of Reproductive Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexandra Herweck located?
- Alexandra Herweck's practice location on file with NPPES is 259 E Erie St Ste 2400, Chicago, IL 60611-3907.
- What is Alexandra Herweck's phone number?
- The practice phone number listed in the NPPES registry for Alexandra Herweck is (312) 695-7269.
- Does Alexandra Herweck accept Medicare?
- Alexandra Herweck is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexandra Herweck's NPI active?
- Yes — Alexandra Herweck's NPI (1609453257) is active in the NPPES registry as of the last update on 2025-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.