MS. MARIAN PENELOPE THOMAS FNP-BC
NPI 1154879591
Nurse Practitioner - Family in Oakland, MD

Active since September 14, 2016PECOS EnrolledAccepts Medicare Assignment
1027 MEMORIAL DR, OAKLAND, MD 21550(301) 533-3300(833) 448-0361 Get Directions Write a Review

NPPES record last updated: February 18, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 18, 2025, Jan 12, 2021, Oct 16, 2020 and 1 more (4 updates tracked since 2016).

About Ms. Marian Penelope Thomas Fnp-bc NPPES

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

MS. MARIAN PENELOPE THOMAS FNP-BC (NPI 1154879591) is an individual family provider in Oakland, Maryland, licensed in Maryland (R26387) and active in the NPI registry since September 2016. She is enrolled in Medicare PECOS, is affiliated with Garrett Regional Medical Center, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1154879591
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMS. MARIAN PENELOPE THOMASCredential: FNP-BC
Location Address1027 MEMORIAL DROakland, MD 21550-4343
Mailing Address1027 Memorial DrOakland, MD 21550-4343 · (301) 533-3300 · Fax (833) 448-0361
Fax(833) 448-0361
Sole ProprietorYes
Medical School CMSOtherGraduated 2016
Enumeration DateSeptember 14, 2016
Last NPPES UpdateFebruary 18, 20254 updates tracked since enumeration
NPPES CertifiedFebruary 18, 2025
NPI 1154879591 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License Licensed in MD · R26387
1027 MEMORIAL DR, Oakland, MD 21550

Accepted Insurance

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

Ms. Marian Penelope Thomas Fnp-bc 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 ID446524052
PECOS Enrollment IDI20200117000617
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 3

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.

Automated urinalysis test 81003
An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.
27 services23 patients
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza 87428
This test uses a method called immunoassay to identify severe acute respiratory syndrome coronavirus and influenza. It works by detecting specific proteins (antigens) in a sample, like a nasal swab. It's a powerful tool in diagnosing these viral infections.
20 services19 patients
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) 87880
A detection test by immunoassay for Group A Strep is a quick procedure to identify a bacterial infection in your throat. It involves taking a throat swab and applying it to a test strip, which changes color if Strep bacteria are present.
12 services12 patients

Hospital Affiliations CMS Care Compare

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

Garrett Regional Medical Center

Acute Care Hospitals · Oakland, MD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210017
Location251 North Fourth StreetOakland, MD 21550 · Garrett County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21550 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
$89.75 typical visit price
range $57.99 – $175.57
Typical copayment $22.43 (range $14.49 – $43.89)
Most-billed visit code 99203
Established Patient
$102.11 typical visit price
range $18.66 – $143.02
Typical copayment $25.52 (range $4.66 – $35.75)
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

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

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier25 claims25 services$102.58 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.

Pharmacy (Community/Retail Pharmacy)
1027 MEMORIAL DR, SUITE 100
OAKLAND, MD 21550
Nurse Practitioner (Psychiatric/Mental Health)
1027 MEMORIAL DR
OAKLAND, MD 21550
Family Medicine
1027 MEMORIAL DR
OAKLAND, MD 21550
Dietitian, Registered
1027 MEMORIAL DR
OAKLAND, MD 21550
Nurse Practitioner (Pediatrics)
1027 MEMORIAL DR
OAKLAND, MD 21550
Social Worker (Clinical)
1027 MEMORIAL DR
OAKLAND, MD 21550
Physician Assistant
1027 MEMORIAL DR
OAKLAND, MD 21550
Nurse Practitioner (Family)
1027 MEMORIAL DR
OAKLAND, MD 21550

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 Marian Thomas's NPI number?

The NPI number for Marian Thomas is 1154879591. It was assigned to this individual provider in the NPPES registry on September 14, 2016.

Where is Marian Thomas located?

Marian Thomas practices at 1027 Memorial Dr, Oakland, MD 21550. The listed phone number is (301) 533-3300.

What is Marian Thomas's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Marian Thomas enrolled in Medicare?

Yes. Marian Thomas 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.

What insurance does Marian Thomas accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Buckeye Health Plan, CareSource and Highmark Blue Cross Blue Shield West Virginia list Marian Thomas as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Marian Thomas affiliated with any hospitals?

According to CMS data, Marian Thomas is affiliated with Garrett Regional Medical Center.

When was this NPI record last updated?

The NPPES record for Marian Thomas was last updated on February 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.