Catherine Siew, DO
NPI 1992333496 · Neonatal-Perinatal Medicine Physician · Ann Arbor, MI
Catherine Siew, DO is a Neonatal-Perinatal Medicine Physician provider in Ann Arbor, MI (NPI 1992333496).
Provider details
- NPI number
- 1992333496
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 5101027272 (MI)
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
6 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
- 2020-03-30
- Last updated
- 2023-08-07
- Certified
- 2023-08-05
Frequently asked questions
- What is Catherine Siew's NPI number?
- Catherine Siew's National Provider Identifier (NPI) is 1992333496, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Siew's specialty?
- Catherine Siew is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Siew located?
- Catherine Siew's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Catherine Siew's phone number?
- The practice phone number listed in the NPPES registry for Catherine Siew is (734) 936-4320.
- Is Catherine Siew's NPI active?
- Yes — Catherine Siew's NPI (1992333496) is active in the NPPES registry as of the last update on 2023-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.