Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Troy W Baker , DO

Allergy & Immunology • Mc Lean, VA

Active NPI 1023164910 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

8008 Westpark Dr
Mc Lean, VA 221023109

Call 7032876559 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

8008 Westpark Dr

Mc Lean, VA 221023109

Telephone 7032876559
Organization at the Same NPPES Address or Phone
Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc Facility NPI 1073678637

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

2005

30-day fills

184 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$4,497 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $24.05 in 2022

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2022.

Guide: How to read an Open Payments record

Years since graduation

21 years (graduated 2005)

CMS Doctors and Clinicians data list 2005 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2007

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Baker has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Baker as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Mc Lean and Virginia

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

Fewer Part D prescriptions than 65% of clinicians listed under Allergy & Immunology in Virginia (2024, 90 clinicians with data). Median for this group: 221. Middle half: 61 to 654.

Too few clinicians listed under Allergy & Immunology in Mc Lean have Medicare Part D data for 2024 to compare.

Part D drug cost

A lower Part D drug cost than 80% of clinicians listed under Allergy & Immunology in Virginia (2024, 90 clinicians with data). Median for this group: $90,759. Middle half: $11,674 to $201,390.

Too few clinicians listed under Allergy & Immunology in Mc Lean have Medicare Part D data for 2024 to compare.

5 active clinicians are listed under Allergy & Immunology with a practice address in Mc Lean, VA (136 in Virginia).

Addresses are self-reported to NPPES and may be out of date.

Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2022), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2022

Program year 2022 (payments made January 1 – December 31, 2022): fewer than 11 records totaling $24.05.

Manufacturer Payment Nature Product Type Amount ($)
ABBVIE INC.
Food and Beverage
In-kind items and services
VRAYLAR General $24.05

Source: CMS Open Payments, program year 2022, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Azelastine Hcl Azelastine Hcl 54 2,425 $912.27 26
Ipratropium Bromide Ipratropium Bromide 52 1,794 $1,296.16 23
Epinephrine Epinephrine 18 525 $2,188.44 11
Famotidine Famotidine 12 660 $100.01 —

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2021-06-08
Allergy & Immunology Primary Specialty

NUCC Taxonomy Code: 207K00000X

License # reported to NPPES VA 0102204034

An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

Pediatrics

NUCC Taxonomy Code: 208000000X

License # reported to NPPES OH 58.001854

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Allergy & Immunology - Allergy

NUCC Taxonomy Code: 207KA0200X

License # reported to NPPES MD H0075043

A physician who specializes in the diagnosis, treatment, and management of allergies.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Virginia Department of Health Professions.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - ALLERGY/IMMUNOLOGY

Medicare Enrollment ID

I20150722005430

Enrollment State Jurisdiction

VA

PECOS Control ID

2860637840

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc

13285 Minnieville Rd, Woodbridge, VA 221924018

Phone: 7039862400

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc

8008 Westpark Dr, Mc Lean, VA 221023109

Phone: 7032876400

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc

1221 Mercantile Ln, Largo, MD 207745374

Phone: 3016185700

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

2 listed
Dr. Meredith Heltzer , MD

Pediatrics - Pediatric Allergy/Immunology

NPI 1427073634

Doctor of Medicine (M.D.)

Dr. Stephen Scranton , MD

Allergy & Immunology

NPI 1336174671

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
📍
Updated Practice Location June 08, 2021

Registered at 8008 WESTPARK DR, MC LEAN, VA 221023109 (Tel: 7032876559)

📍
Updated Business Mailing Address June 08, 2021

Registered at 10105 NADINE DR, VIENNA, VA 221814049

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 08, 2021

Pediatrics (license number reported to NPPES: OH 58.001854)

âś…
NPI Profile Active March 19, 2015

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) March 19, 2015

Registered at 1505 FRANKLIN RD SW, ROANOKE, VA 240165206 (Tel: 5403437331)

📍
Business Mailing Address (Initial Record) March 19, 2015

Registered at 1620 ETON WAY, CROFTON, MD 211141527

👤
Provider Name / Credentials (Initial Record) March 19, 2015

Recorded as TROY BAKER, D.O.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 19, 2015

Allergy & Immunology (license number reported to NPPES: VA 0102204034)

🟢
Initial NPI Registration & Enumeration January 25, 2007

First registered as active Individual Practitioner in NPPES Database.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1023164910
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: January 25, 2007
Last Update: June 08, 2021
Sole Proprietor: Yes

Other Allergy & Immunology Specialists in Mc Lean

Healthcare providers in Mc Lean

More public profiles in Virginia

Directory navigation, in NPI number order.

Mailing Address

10105 Nadine Dr

Vienna, VA 221814049

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.