SETH Y FLAGG MD
NPI 1548305451
Family Medicine in Upper Marlboro, MD

Active since February 20, 2007PECOS EnrolledAccepts Medicare Assignment
1221 MERCANTILE LN, UPPER MARLBORO, MD 20774(240) 672-3190 Get Directions Write a Review

NPPES record last updated: June 26, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Seth Y Flagg Md NPPES

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

SETH Y FLAGG MD (NPI 1548305451) is an individual family medicine provider in Upper Marlboro, Maryland, licensed in Maryland (0082488) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (2006).

NPPES Registry Identity

NPI1548305451
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameSETH Y FLAGGCredential: MD
Location Address1221 MERCANTILE LNUpper Marlboro, MD 20774-5374
Mailing Address2101 E Jefferson St Ste 6wRockville, MD 20852-4908 · (301) 816-5853
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 2006
Enumeration DateFebruary 20, 2007
Last NPPES UpdateJune 26, 2021
NPPES CertifiedJune 26, 2021
NPI 1548305451 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License Licensed in MD · 0082488
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedHospitalistTaxonomy 208M00000X · License 0082488 (MD)
1221 MERCANTILE LN, Upper Marlboro, MD 20774

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

Seth Y Flagg 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 ID1759562416
PECOS Enrollment IDI20110301000259
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 2

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 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.
34 services17 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.
26 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20774 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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
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 2

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

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
2 suppliers19 claims19 services$37.85 avg. paid by Medicare
Trapeze bars, a/k/a patient helper, attached to bed, with grab bar E0910
DME-Other DME · category DE000N
1 supplier11 claims11 services$7.06 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.

Psychiatry & Neurology (Psychiatry)
1221 MERCANTILE LN
LARGO, MD 20774
Anesthesiology
1221 MERCANTILE LN
UPPER MARLBORO, MD 20774
Internal Medicine
1221 MERCANTILE LN, KAISER PERMANENTE LARGO MEDICAL CENTER
LARGO, MD 20774
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1221 MERCANTILE LN, DEPT OF OBGYN
LARGO, MD 20774
Anesthesiology
1221 MERCANTILE LN
UPPER MARLBORO, MD 20774
Physician Assistant
1221 MERCANTILE LN, KAISER PERMANENTE LARGO MEDICAL CENTER
LARGO, MD 20774
Urology
1221 MERCANTILE LN, KAISER PERMANENTE DEPARTMENT OF UROLOGY
LARGO, MD 20774
Obstetrics & Gynecology
1221 MERCANTILE LN
UPPER MARLBORO, MD 20774

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 Seth Flagg's NPI number?

The NPI number for Seth Flagg is 1548305451. It was assigned to this individual provider in the NPPES registry on February 20, 2007.

Where is Seth Flagg located?

Seth Flagg practices at 1221 Mercantile Ln, Upper Marlboro, MD 20774. The listed phone number is (240) 672-3190.

What is Seth Flagg's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Seth Flagg enrolled in Medicare?

Yes. Seth Flagg 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 Seth Flagg was last updated on June 26, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.