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JOHN WAH M.D.
NPI 1265727580
Internal Medicine in Westminster, MD

Active since June 15, 2011PECOS EnrolledAccepts Medicare Assignment
14.98/100
CMS Quality Rating
77 E MAIN ST STE 215, WESTMINSTER, MD 21157(410) 871-8104 Get Directions Write a Review

NPPES record last updated: November 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 12, 2025, Mar 21, 2019, Mar 17, 2018 and 1 more (4 updates tracked since 2017).

About John Wah M.d. NPPES

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

JOHN WAH M.D. (NPI 1265727580) is an individual internal medicine provider in Westminster, Maryland, licensed in Maryland (D0077578) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS, is affiliated with Frederick Health Hospital, and maintains a secondary practice location in Sykesville.

NPPES Registry Identity

NPI1265727580
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJOHN WAHCredential: M.D.
Location Address77 E MAIN ST STE 215Westminster, MD 21157-5037
Mailing Address684 Poole Rd Ste AWestminster, MD 21157-6173 · (667) 367-2260 · Fax (410) 848-5629
Phone(410) 871-8104
Sole ProprietorYes
Medical School CMSOtherGraduated 2011
Enumeration DateJune 15, 2011
Last NPPES UpdateNovember 12, 20254 updates tracked since enumeration
NPPES CertifiedNovember 12, 2025
✔ NPI 1265727580 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 · D0077578
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.
77 E MAIN ST STE 215, Westminster, MD 21157
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Secondary Practice Location 1

Location 17309 2nd AveSykesville, MD 21784-7531 · Phone (410) 795-1100 · Fax (410) 848-5629

Other Identifiers 1

Medicaid079467800MD

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

John Wah M.d. 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 ID5991956609
PECOS Enrollment IDI20140804001071
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.

Medicare Billing Reassignment

Medicare enrollment records show John Wah reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Expanding Medicine, LLC
Internal Medicine
71 E MAIN ST
Westminster, MD 21157
  • Reassigned Medicare billing, Maryland enrollment
  • 4 clinicians in this Medicare group
NPI 1821582297 (410) 871-8104

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 8

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 nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310
A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.
1,186 services193 patients
Complex chronic care management services for two or more chronic conditions, first 60 minutes of clinical staff time directed by health care professional, per calendar month 99487
Complex chronic care management is a service for patients with two or more long-term health conditions. It involves a healthcare professional directing clinical staff in providing care for the first 60 minutes each month. This helps manage your health conditions effectively.
788 services194 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
309 services180 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
240 services114 patients
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306
An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.
183 services157 patients
Telephone medical discussion with physician, 21-30 minutes 99443
This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
136 services88 patients

Hospital Affiliations CMS Care Compare

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

Frederick Health Hospital

Acute Care Hospitals · Frederick, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210005
Location400 West Seventh StFrederick, MD 21701 · Frederick County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21157 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.

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.

14.98/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0
Cost49.93

Referred Medical Equipment & Supplies CMS DME claims 7

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
3 suppliers13 claims54 services$5.35 avg. paid by Medicare
Indwelling catheter; specialty type, (e.g., coude, mushroom, wing, etc.), each A4340
DME-Orthotic Devices · category DF000N
1 supplier11 claims11 services$30.68 avg. paid by Medicare
Alginate or other fiber gelling dressing, wound cover, sterile, pad size 16 sq. in. or less, each dressing A6196
DME-Medical/Surgical Supplies · category DA023N
3 suppliers12 claims320 services$7.12 avg. paid by Medicare
Conforming bandage, non-elastic, knitted/woven, sterile, width greater than or equal to three inches and less than five inches, per yard A6446
DME-Medical/Surgical Supplies · category DA023N
3 suppliers14 claims1,784 services$0.38 avg. paid by Medicare
Walker, folding, wheeled, adjustable or fixed height E0143
DME-Other DME · category DE000N
5 suppliers11 claims11 services$45.46 avg. paid by Medicare
Hospital bed, heavy duty, extra wide, with weight capacity greater than 350 pounds, but less than or equal to 600 pounds, with any type side rails, with mattress E0303
DME-Hospital Beds · category DB000N
1 supplier13 claims13 services$92.28 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 John Wah's NPI number?

The NPI number for John Wah is 1265727580. It was assigned to this individual provider in the NPPES registry on June 15, 2011.

Where is John Wah located?

John Wah practices at 77 E Main St Ste 215, Westminster, MD 21157. The listed phone number is (410) 871-8104.

What is John Wah's specialty?

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

Is John Wah enrolled in Medicare?

Yes. John Wah 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 organization bills Medicare for John Wah's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Wah reassigns Medicare benefits to Expanding Medicine, LLC (Westminster, MD). The 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 John Wah's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is John Wah affiliated with any hospitals?

According to CMS data, John Wah is affiliated with Frederick Health Hospital.

When was this NPI record last updated?

The NPPES record for John Wah was last updated on November 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.