1. Home
  2. Directory
  3. Maryland
  4. Gaithersburg
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. BAOLANG LIAO M.D.
NPI 1215974464
Internal Medicine in Gaithersburg, MD

Active since May 31, 2006PECOS Enrolled
16220 S FREDERICK AVE, SUITE 418, GAITHERSBURG, MD 20877(301) 926-9088(301) 926-3999 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Baolang Liao M.d. NPPES

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

DR. BAOLANG LIAO M.D. (NPI 1215974464) is an individual internal medicine provider in Gaithersburg, Maryland, licensed in Maryland (D0056595) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1215974464
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. BAOLANG LIAOCredential: M.D.
Location Address16220 S FREDERICK AVE, SUITE 418Gaithersburg, MD 20877-4039
Mailing Address16220 S Frederick Ave, Suite 418Gaithersburg, MD 20877-4039 · (301) 926-9088 · Fax (301) 926-3999
Phone(301) 926-9088
Fax(301) 926-3999
Sole ProprietorNo
Enumeration DateMay 31, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1215974464 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 · D0056595
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.
16220 S FREDERICK AVE, Gaithersburg, MD 20877
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Baolang Liao M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20877 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.

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SHADY GROVE PODIATRY LLC
Durable Medical Equipment & Medical Supplies
16220 S FREDERICK AVE, SUITE 200
GAITHERSBURG, MD 20877
Montgomery County (301) 948-2995
DR. RONALD ALLEN FOOTER D.P.M.
Podiatrist
16220 S FREDERICK AVE, SUITE 200
GAITHERSBURG, MD 20877
Montgomery County (301) 948-2995
DR. AMIR DARIUS ASSILI DPM
Podiatrist (Foot & Ankle Surgery)
16220 S FREDERICK AVE, SUITE 427
GAITHERSBURG, MD 20877
Montgomery County (301) 948-2995
LAURA TING MWS
Social Worker (Clinical)
16220 S FREDERICK AVE, SUITE 502
GAITHERSBURG, MD 20877
Montgomery County (301) 978-9750
COMPREHENSIVE DERMATOLOGY CENTER, P.C
Dermatology
16220 S FREDERICK AVE, SUITE 420
GAITHERSBURG, MD 20877
Montgomery County (301) 869-2126
PULMONOLOGISTS, PC
Internal Medicine (Pulmonary Disease)
16220 S FREDERICK AVE, SUITE 213
GAITHERSBURG, MD 20877
Montgomery County (301) 963-2770
MS. PEGGY DIENES MSW
Social Worker (Clinical)
16220 S FREDERICK AVE, SUITE 502
GAITHERSBURG, MD 20877
Montgomery County (301) 978-9750
ADRIANA DE PALMA LCSW-C
Social Worker (Clinical)
16220 S FREDERICK AVE, SUITE 502
GAITHERSBURG, MD 20877
Montgomery County (301) 978-9750

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 Baolang Liao's NPI number?

The NPI number for Baolang Liao is 1215974464. It was assigned to this individual provider in the NPPES registry on May 31, 2006.

Where is Baolang Liao located?

Baolang Liao practices at 16220 S Frederick Ave Suite 418, Gaithersburg, MD 20877. The listed phone number is (301) 926-9088.

What is Baolang Liao's specialty?

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

Is Baolang Liao enrolled in Medicare?

Yes. Baolang Liao is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Baolang Liao was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.