MAY ALATTAR MD
NPI 1154523371
Internal Medicine - Endocrinology, Diabetes & Metabolism in Bethesda, MD
About May Alattar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAY ALATTAR MD (NPI 1154523371) is an individual endocrinology, diabetes & metabolism provider in Bethesda, Maryland, licensed in Maryland (D68860) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS, is affiliated with Suburban Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
Other Identifiers 2
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
May Alattar 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
4Medicare enrollment records show May Alattar reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Kensington, MD 20895
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1285752121 (Maryland)
- 2,492 clinicians in this Medicare group
Tysons, VA 22102
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1689485963 (Maryland)
- 691 clinicians in this Medicare group
West Bloomfield, MI 48323
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Michigan Telemedicine Associates PC
- 5 clinicians in this Medicare group
Roseville, CA 95661
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Telemedicine Group PC
- 205 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 4
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.
Suburban Hospital
Acute Care Hospitals · Bethesda, MDJohns Hopkins Howard County Medical Center
Acute Care Hospitals · Columbia, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20814 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.
Referred Medical Equipment & Supplies CMS DME claims
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.
BETHESDA, MD 20814
BETHESDA, MD 20814
BETHESDA, MD 20814
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 May Alattar's NPI number?
The NPI number for May Alattar is 1154523371. It was assigned to this individual provider in the NPPES registry on June 1, 2007. The provider is also known as May Mahmood.
Where is May Alattar located?
May Alattar practices at 8600 Old Georgetown Rd, Bethesda, MD 20814. The listed phone number is (301) 896-3100.
What is May Alattar's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is May Alattar enrolled in Medicare?
Yes. May Alattar 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 May Alattar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), May Alattar reassigns Medicare benefits to 4 organizations: Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Kensington, MD), Johns Hopkins Community Physicians, Inc (Tysons, VA), Michigan Telemedicine Associates, P.C. (West Bloomfield, MI) and Telehealth Specialty Medical Group (Roseville, CA). 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 May Alattar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is May Alattar affiliated with any hospitals?
According to CMS data, May Alattar is affiliated with Suburban Hospital and Johns Hopkins Howard County Medical Center.
When was this NPI record last updated?
The NPPES record for May Alattar was last updated on April 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# May Alattar, MD · NPI 1154523371
Endocrinology, Diabetes & Metabolism physician in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since June 1, 2007.
## Identity
- **NPI:** 1154523371 (Entity type: Individual)
- **Enumerated:** June 1, 2007
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **State license:** D68860 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 8600 OLD GEORGETOWN RD, Bethesda, MD 20814-1497
- **Phone:** (301) 896-3100
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1376601872, Kensington, MD); Johns Hopkins Community Physicians, Inc (NPI 1790631695, Tysons, VA); Michigan Telemedicine Associates, P.C. (NPI 1275295321, West Bloomfield, MI); Telehealth Specialty Medical Group (NPI 1326338237, Roseville, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1999
## Record status
- **NPPES last updated:** April 22, 2025
- **Other identifiers:** Other 9783-0021 (MD); Medicaid 054823500 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1154523371) · Data from the CMS NPPES public registry.