Frederick Joseph Ast, MD - Medicare Allergy/immunology in New York, NY

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Frederick Joseph Ast, MD is a medicare enrolled "Internal Medicine - Rheumatology" physician in New York, New York. He graduated from medical school in 1994 and has 32 years of diverse experience with area of expertise as Allergy/immunology. He is a member of the group practice Shakespeare Operating Llc, Community Health Center Of Branch County, Benson Hospital Corporation and his current practice location is 35 E 30th St, Ste 1a, New York, New York. You can reach out to his office (for appointments etc.) via phone at (212) 725-7027.

Frederick Joseph Ast is licensed to practice in New York (license number 1783111) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1699742288.

Contact Information

Frederick Joseph Ast, MD
35 E 30th St, Ste 1a,
New York, NY 10016-7325
(212) 725-7027
(212) 725-0433

Map and Direction




Physician's Profile

Full NameFrederick Joseph Ast
GenderMale
SpecialityAllergy/immunology
Experience32 Years
Location35 E 30th St, New York, New York
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Frederick Joseph Ast graduated from medical school in 1994
  NPI Data:
  • NPI Number: 1699742288
  • Provider Enumeration Date: 03/02/2006
  • Last Update Date: 07/29/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 9133291909
  • Enrollment ID: I20080710000649

Medical Identifiers

Medical identifiers for Frederick Joseph Ast such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1699742288NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RR0500XInternal Medicine - Rheumatology 77224 (Arizona)Secondary
207K00000XAllergy & Immunology 1783111 (New York)Secondary
207R00000XInternal Medicine 1783111 (New York)Secondary
207RR0500XInternal Medicine - Rheumatology 1783111 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Opelousas General Health SystemOpelousas, LAHospital
Tri-state Memorial HospitalClarkston, WAHospital
Northern Light Eastern Maine Medical CenterBangor, MEHospital
Insight Hospital And Medical Center ColdwaterColdwater, MIHospital
Northern Light Mayo HospitalDover foxcroft, MEHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Shakespeare Operating Llc0840604310144
Community Health Center Of Branch County933503751456
Benson Hospital Corporation327444305620

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Frederick Joseph Ast allows following entities to bill medicare on his behalf.
Entity NameEssen Medical Associates, PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366418709
PECOS PAC ID: 1759353501
Enrollment ID: O20040811000885
Entity NameIcahn School of Medicine at Mount Sinai
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1104295716
PECOS PAC ID: 4486955267
Enrollment ID: O20151221001450
Entity NameShakespeare Operating LLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720634538
PECOS PAC ID: 0840604310
Enrollment ID: O20210123000014

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Frederick Joseph Ast is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Frederick Joseph Ast, MD
35 E 30th St, Ste 1a,
New York, NY 10016-7325

Ph: (212) 725-7027		Frederick Joseph Ast, MD
35 E 30th St, Ste 1a,
New York, NY 10016-7325

Ph: (212) 725-7027

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

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