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KELLY WEI WEI KOAY MD
NPI 1497975809
Internal Medicine in Nottingham, MD

Active since April 26, 2007PECOS EnrolledAccepts Medicare Assignment
4924 CAMPBELL BLVD, SUITE 200, NOTTINGHAM, MD 21236(443) 442-2300(410) 367-2035 Get Directions Write a Review

NPPES record last updated: May 4, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 4, 2026, Feb 22, 2017 (2 updates tracked since 2017).

About Kelly Wei Wei Koay Md NPPES

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

KELLY WEI WEI KOAY MD (NPI 1497975809) is an individual internal medicine provider in Nottingham, Maryland, licensed in Maryland (D0082382) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Washington University School Of Medicine (2003).

NPPES Registry Identity

NPI1497975809
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameKELLY WEI WEI KOAYCredential: MD
Location Address4924 CAMPBELL BLVD, SUITE 200Nottingham, MD 21236-5908
Mailing Address4924 Campbell Blvd Ste 200Nottingham, MD 21236-5914 · (443) 442-2300 · Fax (410) 367-2035
Phone(443) 442-2300
Fax(410) 367-2035
Sole ProprietorNo
Medical School CMSWashington University School Of MedicineGraduated 2003
Enumeration DateApril 26, 2007
Last NPPES UpdateMay 4, 20262 updates tracked since enumeration
NPPES CertifiedMay 4, 2026
✔ NPI 1497975809 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in MD · D0082382✔ Licensed in GA · 58977
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.
Also ListedPediatricsTaxonomy 208000000X · License 58977 (GA)
4924 CAMPBELL BLVD, Nottingham, MD 21236
Open in Google Maps ↗

Other Identifiers 2

Medicaid258827202AGA
Other52230109GA · Bc/bs

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

Kelly Wei Wei Koay 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 ID7618062043
PECOS Enrollment IDI20170315000177, I20170315000210
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 9

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
332 services195 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
134 services134 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
63 services58 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
52 services48 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
40 services27 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
35 services34 patients

Hospital Affiliations CMS Care Compare 2

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

Johns Hopkins Bayview Medical Center

Acute Care Hospitals · Baltimore, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210029
Location4940 Eastern AvenueBaltimore, MD 21224 · Baltimore City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21236 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.

Referred Medical Equipment & Supplies CMS DME claims 3

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
7 suppliers18 claims53 services$6.36 avg. paid by Medicare
Ostomy pouch, drainable, with extended wear barrier attached, with built in convexity, with filter, (1 piece), each A5057
DME-Orthotic Devices · category DF010N
2 suppliers11 claims220 services$8.96 avg. paid by Medicare
Nebulizer, with compressor E0570
DME-Other DME · category DE000N
1 supplier15 claims15 services$3.68 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.

MISS DANIELLE R. NORTH PA-C
Physician Assistant
4924 CAMPBELL BLVD, SUITE 200
NOTTINGHAM, MD 21236
Baltimore County (443) 442-2300
NAOMI P CUTLER M.D.
Internal Medicine
4924 CAMPBELL BLVD, SUITE 200
BALTIMORE, MD 21236
Baltimore County (443) 442-2300
MR. DAVID S SANDLER PAC
Physician Assistant (Medical)
4924 CAMPBELL BLVD
WHITE MARSH, MD 21236
Baltimore County (443) 442-2300
DEBRAHE K. ROWLAND AG-ACNP-BC
Nurse Practitioner (Acute Care)
4924 CAMPBELL BLVD
NOTTINGHAM, MD 21236
Baltimore County (443) 442-2300
WHITE MARSH PHARMACY
Pharmacy (Community/Retail Pharmacy)
4924 CAMPBELL BLVD, STE 120
NOTTINGHAM, MD 21236
Baltimore County (443) 384-2500
JOHNS HOPKINS UNIVERSITY
Internal Medicine
4924 CAMPBELL BLVD
BALTIMORE, MD 21236
Baltimore County (443) 442-2401
DR. TIGIST HAILU M.D.
Internal Medicine (Cardiovascular Disease)
4924 CAMPBELL BLVD, STE 110
BALTIMORE, MD 21236
Baltimore County (443) 442-2000
DR. HANNAH MARIE VACA DPT
Physical Therapist
4924 CAMPBELL BLVD
NOTTINGHAM, MD 21236
Baltimore County (410) 955-5000

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 Kelly Koay's NPI number?

The NPI number for Kelly Koay is 1497975809. It was assigned to this individual provider in the NPPES registry on April 26, 2007.

Where is Kelly Koay located?

Kelly Koay practices at 4924 Campbell Blvd Suite 200, Nottingham, MD 21236. The listed phone number is (443) 442-2300.

What is Kelly Koay's specialty?

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

Is Kelly Koay enrolled in Medicare?

Yes. Kelly Koay 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 Kelly Koay affiliated with any hospitals?

According to CMS data, Kelly Koay is affiliated with Johns Hopkins Hospital, The and Johns Hopkins Bayview Medical Center.

When was this NPI record last updated?

The NPPES record for Kelly Koay was last updated on May 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.