Is this your practice, Frederick E. Siefert, MD, PC? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 8 W End Ave, Old Greenwich, CT 06870
About Frederick E. Siefert, MD, PC
Frederick E. Siefert, MD, PC is an organization based in Old Greenwich, CT and listed in the NPI registry under internal medicine. NPI 1417093683 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Practice Size
Counted from individual NPI records registered at the same street address; a shared building can inflate this.
Providers in This Building & Nearby
From registry street addresses: providers filed at this building, which can include unrelated practices sharing it.
- Courtney Liebowitz, PA-C Physician Assistant
- Therese A. Bernstein, APRN Nurse Practitioner — Pediatrics
- Melanie S. Kelton, M.D. Internal Medicine
- Jennifer S. Millman, MD Pediatrics
- Burton R. Rubin, M.D. Internal Medicine
- Rebecca L. Warkol, MD Internal Medicine
- Amy Kappelman, M.D. Pediatrics
- Gail Weiner, M.D. Pediatrics
- Natasha Khosla, M.D. Pediatrics
- Elizabeth Z. Krowitz, M.D. Pediatrics
Showing 10 of 16. The full list is in the Related Providers tab.
Specialty
Credentials & Licensing
Contact Information
- (203) 637-5406
- Email not available
Practice Locations
8 W END AVE
Old Greenwich, CT 06870
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 2 related providers in 1 group
Other internists in Old Greenwich 2
Same specialty, same city.
Common questions
What is Frederick E. Siefert, MD, PC's specialty?
Frederick E. Siefert, MD, PC is an internist in Old Greenwich, CT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where can I find Frederick E. Siefert, MD, PC?
Frederick E. Siefert, MD, PC is listed at 8 W End Ave, Old Greenwich, CT 06870. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Frederick E. Siefert, MD, PC?
The number on file is (203) 637-5406. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Frederick E. Siefert, MD, PC?
Frederick E. Siefert, MD, PC's National Provider Identifier is 1417093683. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Is Frederick E. Siefert, MD, PC's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Frederick E. Siefert, MD, PC. If this is you, claiming it is free.
Guide.md
Is this your practice?
Manage this listing? Log in or create an account, then click “This is my practice and I manage it” here. A verified physician whose registry address matches this location is approved instantly; everyone else is reviewed by a person.
Guide.md listings do not constitute medical advice or an endorsement.