DR. AHMER ISHTIAQ MD
NPI 1508205535
Internal Medicine in Worcester, MA
About Dr. Ahmer Ishtiaq Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AHMER ISHTIAQ MD (NPI 1508205535) is an individual internal medicine provider in Worcester, Massachusetts, licensed in Massachusetts (269054) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, is affiliated with Hendrick Medical Center Brownwood, and maintains a secondary practice location in Palmer.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Ahmer Ishtiaq Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
9Medicare enrollment records show Ahmer Ishtiaq reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
East Patchogue, NY 11772
- Reassigned Medicare billing, New York enrollment
- 640 clinicians in this Medicare group
Bronx, NY 10461
- Reassigned Medicare billing, New York enrollment
- 244 clinicians in this Medicare group
Carthage, NY 13619
- Reassigned Medicare billing, New York enrollment
- 199 clinicians in this Medicare group
Rochester, NY 14624
- Reassigned Medicare billing, New York enrollment
- 185 clinicians in this Medicare group
Dallas, TX 75246
- Reassigned Medicare billing, Texas enrollment
- 2,795 clinicians in this Medicare group
Humble, TX 77338
- Reassigned Medicare billing, Texas enrollment
- 2,009 clinicians in this Medicare group
Granbury, TX 76048
- Reassigned Medicare billing, Texas enrollment
- 16 clinicians in this Medicare group
Granbury, TX 76048
- Reassigned Medicare billing, Texas enrollment
- 123 clinicians in this Medicare group
Abilene, TX 79601
- Reassigned Medicare billing, Texas enrollment
- 140 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hendrick Medical Center Brownwood
Acute Care Hospitals · Brownwood, TXTexas Health Huguley Hospital Fort Worth South
Acute Care Hospitals · Burleson, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01608 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WORCESTER, MA 01608
WORCESTER, MA 01608
WORCESTER, MA 01608
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ahmer Ishtiaq's NPI number?
The NPI number for Ahmer Ishtiaq is 1508205535. It was assigned to this individual provider in the NPPES registry on June 24, 2013.
Where is Ahmer Ishtiaq located?
Ahmer Ishtiaq practices at 123 Summer St, Worcester, MA 01608. The listed phone number is (508) 363-6849.
What is Ahmer Ishtiaq's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ahmer Ishtiaq enrolled in Medicare?
Yes. Ahmer Ishtiaq is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ahmer Ishtiaq's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ahmer Ishtiaq reassigns Medicare benefits to 9 organizations: Cogent Medical Care PC (East Patchogue, NY), Hospitalist Medicine Physicians Of New York, PLLC (Bronx, NY), Carthage Area Hospital Inc (Carthage, NY), Delphi Hospitalist Services LLC (Rochester, NY), Scott & White Clinic (Dallas, TX) and 4 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ahmer Ishtiaq's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ahmer Ishtiaq accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Texas and Oscar Insurance Company list Ahmer Ishtiaq as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Ahmer Ishtiaq affiliated with any hospitals?
According to CMS data, Ahmer Ishtiaq is affiliated with Hendrick Medical Center Brownwood and Texas Health Huguley Hospital Fort Worth South.
When was this NPI record last updated?
The NPPES record for Ahmer Ishtiaq was last updated on July 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Ahmer Ishtiaq, MD · NPI 1508205535
Internal Medicine physician in Worcester, Massachusetts. Individual provider, active in the CMS NPPES registry since June 24, 2013.
## Identity
- **NPI:** 1508205535 (Entity type: Individual)
- **Enumerated:** June 24, 2013
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 269054 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 123 SUMMER ST, Worcester, MA 01608-1216
- **Phone:** (508) 363-6849
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 9 organizations under Medicare reassignment (form CMS-855R): Cogent Medical Care PC (NPI 1912941238, East Patchogue, NY); Hospitalist Medicine Physicians Of New York, PLLC (NPI 1205944329, Bronx, NY); Carthage Area Hospital Inc (NPI 1053497388, Carthage, NY); Delphi Hospitalist Services LLC (NPI 1922270420, Rochester, NY); Scott & White Clinic (NPI 1649820796, Dallas, TX); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** July 28, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1508205535) · Data from the CMS NPPES public registry.