Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Frederick Joseph Ast, MD

Individual provider Rheumatology Physician · NPI 1699742288

Frederick Joseph Ast, MD practises Allergy/Immunology in New York, New York. Qualified in 1994, 32 years ago. Practices with Shakespeare Operating LLC, a 137-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona and New York.

Years since qualifying
32
Licensed in
AZ, NY
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

35 E 30th St Ste 1A
New York, NY 10016-7325
Phone: (212) 725-7027
Fax: (212) 725-0433
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 26 W Broadway Apt 801, Long Beach, NY 11561-4065 — (417) 875-3000

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 1783111 (NY)
Rheumatology Physician Taxonomy 207RR0500X · Licence 77224 (AZ)
Allergy & Immunology Physician Taxonomy 207K00000X · Licence 1783111 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 1783111 (NY)

Record details

NPI number1699742288
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 2, 2006
Last updated in NPPESJuly 29, 2026
Certification dateJuly 29, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Also practisesINTERNAL MEDICINE, RHEUMATOLOGY
Medical schoolOTHER
Graduated 1994 (32 years in practice)
Group practice Shakespeare Operating Llc — 137 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients236
Services billed 1,400 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Shakespeare Operating LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 137 clinicians in the practice; 12 are shown here.

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