Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ROMSAI T BOONYASAI M.D.
NPI 1508822651
Internal Medicine in Baltimore, MD

Active since April 25, 2006PECOS Enrolled
4940 EASTERN AVE, BALTIMORE, MD 21224(410) 550-9434 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Romsai T Boonyasai M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ROMSAI T BOONYASAI M.D. (NPI 1508822651) is an individual internal medicine provider in Baltimore, Maryland, licensed in Maryland (D62037) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Icahn School Of Medicine At Mount Sinai (1998).

NPPES Registry Identity

NPI1508822651
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameROMSAI T BOONYASAICredential: M.D.
Location Address4940 EASTERN AVEBaltimore, MD 21224-2735
Mailing AddressPo Box 64264Baltimore, MD 21264-4264
Sole ProprietorNo
Medical School CMSIcahn School Of Medicine At Mount SinaiGraduated 1998
Enumeration DateApril 25, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1508822651 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in MD · D62037
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
4940 EASTERN AVE, Baltimore, MD 21224

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Romsai T Boonyasai M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9436045770
PECOS Enrollment IDI20040902001070
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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Johns Hopkins Hospital, The

Acute Care Hospitals · Baltimore, MD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210009
Location600 North Wolfe StreetBaltimore, MD 21287 · Baltimore City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21224 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
$139.05 typical visit price
range $60.73 – $183.44
Typical copayment $34.76 (range $15.18 – $45.86)
Most-billed visit code 99204
Established Patient
$106.59 typical visit price
range $19.60 – $149.17
Typical copayment $26.64 (range $4.90 – $37.29)
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.

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.

Internal Medicine
4940 EASTERN AVE, MFL BLDG, WEST TOWER, 6TH FLOOR
BALTIMORE, MD 21224
Otolaryngology
4940 EASTERN AVE
BALTIMORE, MD 21224
Physician Assistant
4940 EASTERN AVE
BALTIMORE, MD 21224
Pathology (Anatomic Pathology & Clinical Pathology)
4940 EASTERN AVE
BALTIMORE, MD 21224
Student in an Organized Health Care Education/Training Program
4940 EASTERN AVE
BALTIMORE, MD 21224
Obstetrics & Gynecology
4940 EASTERN AVE
BALTIMORE, MD 21224
Registered Nurse (Neonatal Intensive Care)
4940 EASTERN AVE
BALTIMORE, MD 21224
Surgery
4940 EASTERN AVE
BALTIMORE, MD 21224

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 Romsai Boonyasai's NPI number?

The NPI number for Romsai Boonyasai is 1508822651. It was assigned to this individual provider in the NPPES registry on April 25, 2006.

Where is Romsai Boonyasai located?

Romsai Boonyasai practices at 4940 Eastern Ave, Baltimore, MD 21224. The listed phone number is (410) 550-9434.

What is Romsai Boonyasai's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Romsai Boonyasai enrolled in Medicare?

Yes. Romsai Boonyasai is registered in the Medicare PECOS enrollment system.

Is Romsai Boonyasai affiliated with any hospitals?

According to CMS data, Romsai Boonyasai is affiliated with Johns Hopkins Hospital, The.

When was this NPI record last updated?

The NPPES record for Romsai Boonyasai was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days 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.