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

MRS. MARY PATRICIA OLIN PHYSICIAN ASSISTANT
NPI 1841244571
Physician Assistant - Medical in Washington, DC

Q: What is Mary Olin's NPI number?

The NPI number for Mary Olin is 1841244571. It was assigned to this individual provider in the NPPES registry on May 19, 2006.

Q: What is Mary Olin's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Medical, with taxonomy code 363AM0700X.

Q: When was this NPI record last updated?

The NPPES record for Mary Olin 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 25 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.

Active since May 19, 2006PECOS Enrolled

2150 PENNSYLVANIA AVE NW, WASHINGTON, DC 20037(202) 741-2350(202) 741-2791 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Mrs. Mary Patricia Olin Physician Assistant NPPES

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

MRS. MARY PATRICIA OLIN PHYSICIAN ASSISTANT (NPI 1841244571) is an individual medical provider in Washington, District Of Columbia, licensed in District Of Columbia (DCPA215) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1986).

NPPES Registry Identity

NPI1841244571

Entity TypeIndividualFemale

Primary Taxonomy363AM0700X

Provider Legal NameMRS. MARY PATRICIA OLINCredential: PHYSICIAN ASSISTANT

Location Address2150 PENNSYLVANIA AVE NWWashington, DC 20037-3201

Mailing Address7221 Panorama DrDerwood, MD 20855-1940 · (301) 840-9692 · Fax (202) 741-2791

Phone(202) 741-2350

Fax(202) 741-2791

Sole ProprietorNo

Medical School CMSOtherGraduated 1986

Enumeration DateMay 19, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1841244571 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician Assistant · MedicalPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363AM0700X

License✔ Licensed in DC · DCPA215

2150 PENNSYLVANIA AVE NW, Washington, DC 20037

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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

Mrs. Mary Patricia Olin Physician Assistant 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 ID1153327911

PECOS Enrollment IDI20061018000545

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 14

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.

Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes 99348

An established patient home visit is a 25-minute appointment where a healthcare provider visits you at your home. This service is for patients who have previously been seen by the provider. It includes a check-up and discussion about your health concerns.

87 services50 patients

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.

86 services60 patients

Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 99349

An established patient home visit is a medical appointment conducted at your home, typically lasting around 40 minutes. This service is ideal for patients who may find it difficult to travel to a healthcare facility. During this visit, a healthcare professional will evaluate your health status, manage your care, and answer any health-related questions you may have.

83 services45 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

49 services41 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

28 services27 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.

28 services27 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.

25 services25 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.

20 services17 patients

Residence visit for established patient with straightforward medical decision making, per day, if using time, at least 15 minutes 99347

An established patient home visit is a service where a healthcare professional visits your home for a 15-minute check-up. It's designed for patients who have previously seen the professional. The visit may include basic health assessments and discussions about your ongoing care.

20 services18 patients

Transitional care management services for problem of at least moderate complexity 99495

Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.

20 services18 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

20 services13 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.

13 services13 patients

Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes 99350

An established patient home visit is a service where a healthcare professional visits a patient's home for a check-up or treatment. The visit typically lasts for about an hour. This service is especially beneficial for patients who may have difficulty traveling to a healthcare facility.

12 services11 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

11 services11 patients

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

5 suppliers15 claims37 services$5.63 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

3 suppliers25 claims25 services$32.27 avg. paid by Medicare

Rollabout chair, any and all types with casters 5" or greater E1031

DME-Wheelchairs · category DD000N

1 supplier12 claims12 services$23.40 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.

LEI DU LYNN M.D.

Internal Medicine

2150 PENNSYLVANIA AVE NW, SUITE 5-416
WASHINGTON, DC 20037

District of Columbia (202) 741-2574

NIRAJ RAJU GOWDA MD

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

DR. ELLEN CURTIN MURPHY MD

Obstetrics & Gynecology (Obstetrics)

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-2500

DR. CHRISTOPHER DAVID BADGER MD

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

DR. MONICA MARIA MANRIQUE CASTRILLON MD

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

DR. STEVEN JOSEPH RALSTON MD

Obstetrics & Gynecology (Maternal & Fetal Medicine)

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-2500

ROBERT STEVEN SIEGEL M.D.

Internal Medicine (Hematology & Oncology)

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3333

JAMES DAVID KATZ M.D.

Internal Medicine (Rheumatology)

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-2222

SYLVIA MENTEER GONSAHN-BOLLIE M.D.

Internal Medicine

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-2222

MISS HELMA A PARIKH NURSE PRACTITIONER

Nurse Practitioner (Adult Health)

2150 PENNSYLVANIA AVE NW, SUITE 4-411
WASHINGTON, DC 20037

District of Columbia (202) 741-2323

HIRSH SHAH MD

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

QURRATUL-AIN DAR MD

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

SILVI SPIROLLARI POMEROY DO

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

MEGAN ANN MURPHY FNP

Nurse Practitioner (Family)

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-2223

MS. IRENA CULIC MS, PA-C

Physician Assistant

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 747-2600

DR. KEVIN KOSHY MATHEW MD

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

LINDSEY NGUYEN VU MD

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

JONATHAN WAINBLAT MD

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

RACHEL GARN

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

ANDRIANA DOLIBA

Student in an Organized Health Care Education/Training Program

2150 PENNSYLVANIA AVE NW
WASHINGTON, DC 20037

District of Columbia (202) 741-3000

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 Mary Olin's NPI number?

The NPI number for Mary Olin is 1841244571. It was assigned to this individual provider in the NPPES registry on May 19, 2006.

Where is Mary Olin located?

Mary Olin practices at 2150 Pennsylvania Ave NW, Washington, DC 20037. The listed phone number is (202) 741-2350.

What is Mary Olin's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Medical, with taxonomy code 363AM0700X.

Is Mary Olin enrolled in Medicare?

Yes. Mary Olin 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.

When was this NPI record last updated?

The NPPES record for Mary Olin 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 25 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.