Dr Ahmer Ishtiaq, MD - Medicare Internal Medicine in Worcester, MA

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Dr Ahmer Ishtiaq, MD is a medicare enrolled "Internal Medicine" physician in Worcester, Massachusetts. He graduated from medical school in 2008 and has 18 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Hospitalist Medicine Physicians Of Texas Pllc, Quantum Emergency Physicians Pa and his current practice location is 123 Summer St, Worcester, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (508) 363-6849.

Dr Ahmer Ishtiaq is licensed to practice in Massachusetts (license number 269054) 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 1508205535.

Contact Information

Dr Ahmer Ishtiaq, MD
123 Summer St,
Worcester, MA 01608-1216
(508) 363-6849
Not Available

Map and Direction




Physician's Profile

Full NameDr Ahmer Ishtiaq
GenderMale
SpecialityInternal Medicine
Experience18 Years
Location123 Summer St, Worcester, Massachusetts
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:
  • Dr Ahmer Ishtiaq graduated from medical school in 2008
  NPI Data:
  • NPI Number: 1508205535
  • Provider Enumeration Date: 06/24/2013
  • Last Update Date: 07/28/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 4385924216
  • Enrollment ID: I20250605003804

Medical Identifiers

Medical identifiers for Dr Ahmer Ishtiaq such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1508205535NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 269054 (Massachusetts)Primary
208M00000XHospitalist V3617 (Texas)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hendrick Medical Center BrownwoodBrownwood, TXHospital
Texas Health Huguley Hospital Fort Worth SouthBurleson, TXHospital
Eastland Memorial HospitalEastland, TXHospital
Comanche County Medical CenterComanche, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Hospitalist Medicine Physicians Of Texas Pllc3476688318685
Quantum Emergency Physicians Pa115341450379

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. Dr Ahmer Ishtiaq allows following entities to bill medicare on his behalf.
Entity NameScott & White Clinic
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093779704
PECOS PAC ID: 8123923604
Enrollment ID: O20031223000640
Entity NameQuantum Emergency Physicians PA
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215010079
PECOS PAC ID: 1153414503
Enrollment ID: O20070830000804
Entity NameHospitalist Medicine Physicians of Texas PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629307095
PECOS PAC ID: 3476688318
Enrollment ID: O20100317001021
Entity NameLake Granbury Hospital-based Professional Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689443467
PECOS PAC ID: 3971940966
Enrollment ID: O20240326003607

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. Dr Ahmer Ishtiaq 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
Dr Ahmer Ishtiaq, MD
477 Johnson Ave,
Ronkonkoma, NY 11779-6120

Ph: (347) 553-5056		Dr Ahmer Ishtiaq, MD
123 Summer St,
Worcester, MA 01608-1216

Ph: (508) 363-6849

Reviews and Comments


Internal Medicine Doctors in Worcester, MA

Dr. Adepeju Gbadebo Champion, M.D.
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Medicare: Not Enrolled in Medicare
Practice Location: 55 Lake Ave N, Worcester, MA 01655
Phone: 508-334-2731    Fax: 774-442-4672
Madaiah Lokeshwari, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 123 Summer St, Worcester, MA 01608
Phone: 508-363-6849    
Sowmya Korapati,
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Medicare: Accepting Medicare Assignments
Practice Location: 55 Lake Ave N, Worcester, MA 01655
Phone: 508-334-3550    Fax: 774-442-6715
Lihong Huo, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 123 Summer St Ste 655, Worcester, MA 01608
Phone: 888-277-0071    Fax: 508-363-9037
Dr. Herman Anthony Carneiro, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 55 Lake Ave N, Worcester, MA 01655
Phone: 508-334-3452    
Irma Nadeem Hashmi, DO
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 55 Lake Ave N, Worcester, MA 01655
Phone: 508-334-1000    
Jason D Yang,
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 119 Belmont St, Worcester, MA 01605
Phone: 508-334-5224    Fax: 508-334-1053

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.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.