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MAY ALATTAR MD
NPI 1154523371
Internal Medicine - Endocrinology, Diabetes & Metabolism in Bethesda, MD

Active since June 01, 2007PECOS EnrolledAccepts Medicare Assignment
86.79/100
CMS Quality Rating
8600 OLD GEORGETOWN RD, BETHESDA, MD 20814(301) 896-3100 Get Directions Write a Review

NPPES record last updated: April 22, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 6, 2021, Jan 9, 2017 (2 updates tracked since 2017).

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

NPI1154523371
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameMAY ALATTARCredential: MD
Location Address8600 OLD GEORGETOWN RDBethesda, MD 20814-1497
Mailing Address3400 Douglas Blvd Ste 225Roseville, CA 95661-4283 · (855) 446-8628
Phone(301) 896-3100
Sole ProprietorNo
Medical School CMSOtherGraduated 1999
Enumeration DateJune 1, 2007
Last NPPES UpdateApril 22, 20252 updates tracked since enumeration
NPPES CertifiedApril 22, 2025
✔ NPI 1154523371 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in MD · D68860
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
8600 OLD GEORGETOWN RD, Bethesda, MD 20814
Open in Google Maps ↗

Other Names 1

Former Name (1)May Mahmood

Secondary Practice Locations 2

Location 13400 Douglas Blvd Ste 170Roseville, CA 95661-4281 · Phone (855) 446-8628
Location 2750 Lexington AveNew York, NY 10022-1200 · Phone (866) 411-0254 · Fax (866) 619-2889

Other Identifiers 2

Other9783-0021MD · Carefirst Bc/bs
Medicaid054823500MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID3678739893
PECOS Enrollment IDI20120716000435, I20211202000570, I20241003002771
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
128 services92 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
29 services29 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
29 services29 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
28 services27 patients

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, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210022
Location8600 Old Georgetown RoadBethesda, MD 20814 · Montgomery County
Emergency services

Johns Hopkins Howard County Medical Center

Acute Care Hospitals · Columbia, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210048
Location5755 Cedar LaneColumbia, MD 21044 · Howard County
Emergency services Birthing friendly

Physician 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.

New Patient
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

86.79/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality86.46
Promoting Interoperability97
Improvement Activities40
Cost72

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.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
2 suppliers30 claims30 services$200.96 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

CARLOS MANUEL CAMPA MALDONADO
Plastic Surgery
8600 OLD GEORGETOWN RD
BETHESDA, MD 20814
Montgomery County (301) 896-2578
DR. KEITH A HORVATH M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
8600 OLD GEORGETOWN RD
BETHESDA, MD 20814
Montgomery County (301) 896-7610
MRS. DINA L GALITZ NP
Nurse Practitioner (Family)
8600 OLD GEORGETOWN RD
BETHESDA, MD 20814
Montgomery County (301) 896-2654
SPAA
General Acute Care Hospital
8600 OLD GEORGETOWN RD, SUBURBAN HOSPITAL
BETHESDA, MD 20814
Montgomery County (301) 896-3100
SHEILA RAO PA
Physician Assistant
8600 OLD GEORGETOWN RD
BETHESDA, MD 20814
Montgomery County (301) 896-2578
AMY ELIZABETH MCKEE M.D.
Emergency Medicine (Pediatric Emergency Medicine)
8600 OLD GEORGETOWN RD
BETHESDA, MD 20814
Montgomery County (301) 896-3054
MR. CHRISTIAN PELTE M.D.
Internal Medicine (Critical Care Medicine)
8600 OLD GEORGETOWN RD
BETHESDA, MD 20814
Montgomery County (301) 896-3990
SUSAN CECILIA MORENO RPA-C
Physician Assistant
8600 OLD GEORGETOWN RD
BETHESDA, MD 20814
Montgomery County (301) 896-7500

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.

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 15 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.