DR. MARIA LISA O'BRIEN M.D.
NPI 1366429011
Family Medicine in Leonardtown, MD

Q: What is Maria O'brien's NPI number?

The NPI number for Maria O'brien is 1366429011. It was assigned to this individual provider in the NPPES registry on December 23, 2005. The provider is also known as Dr. Maria Lisa Delima M.D..

Q: What is Maria O'brien's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Maria O'brien was last updated on January 24, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.

Active since December 23, 2005PECOS Enrolled

80.17/100

CMS Quality Rating

41680 MISS BESSIE DR STE 301, LEONARDTOWN, MD 20650(301) 997-0055(301) 997-0066 Get Directions Write a Review

NPPES record last updated: January 24, 2017. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 24, 2017, Jun 16, 2016 (2 updates tracked since 2016).

On this page

About Dr. Maria Lisa O'brien M.d. NPPES

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

DR. MARIA LISA O'BRIEN M.D. (NPI 1366429011) is an individual family medicine provider in Leonardtown, Maryland, licensed in Maryland (D82534) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS and is a graduate of Creighton University School Of Medicine (2002).

NPPES Registry Identity

NPI1366429011

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameDR. MARIA LISA O'BRIENCredential: M.D.

Location Address41680 MISS BESSIE DR STE 301Leonardtown, MD 20650-2965

Mailing Address41680 Miss Bessie Dr Ste 301Leonardtown, MD 20650-2965 · (301) 997-0055 · Fax (301) 997-0066

Phone(301) 997-0055

Fax(301) 997-0066

Sole ProprietorNo

Medical School CMSCreighton University School Of MedicineGraduated 2002

Enumeration DateDecember 23, 2005

Last NPPES UpdateJanuary 24, 20172 updates tracked since enumeration

✔ NPI 1366429011 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

Licenses✔ Licensed in MD · D82534✔ Licensed in CA · C53909✔ Licensed in AL · 25649

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.

41680 MISS BESSIE DR STE 301, Leonardtown, MD 20650

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Other Names 1

Former Name (1)Dr. Maria Lisa Delima M.d.

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Maria Lisa O'brien M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8022200773

PECOS Enrollment IDI20260520001763

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20650 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

80.17/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

76.69

Promoting Interoperability

100

Improvement Activities

Cost

53.49

Referred Medical Equipment & Supplies CMS DME claims 14

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

10 suppliers40 claims110 services$5.96 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

4 suppliers12 claims18 services$1.13 avg. paid by Medicare

Intermittent urinary catheter, with insertion supplies A4353

DME-Orthotic Devices · category DF008N

1 supplier12 claims2,400 services$6.73 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

3 suppliers11 claims11 services$14.09 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

4 suppliers16 claims77 services$2.10 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier12 claims12 services$14.28 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 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. ASHLEY O'NEIL CRNP

Nurse Practitioner (Family)

41680 MISS BESSIE DR STE 301
LEONARDTOWN, MD 20650

St. Mary's County (301) 997-0055

STEPHENIE ANN GUTRIDGE-SNODE MSN, CRNP

Nurse Practitioner (Family)

41680 MISS BESSIE DR STE 301
LEONARDTOWN, MD 20650

St. Mary's County (240) 526-7076

KATHRYN FRANZEN STERLING APRN

Nurse Practitioner

41680 MISS BESSIE DR STE 301
LEONARDTOWN, MD 20650

St. Mary's County (301) 997-0055

SHERRY KATHRYN HAUBERT

Nurse Practitioner (Family)

41680 MISS BESSIE DR STE 301
LEONARDTOWN, MD 20650

St. Mary's County (301) 997-0055

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 Maria O'brien's NPI number?

The NPI number for Maria O'brien is 1366429011. It was assigned to this individual provider in the NPPES registry on December 23, 2005. The provider is also known as Dr. Maria Lisa Delima M.D..

Where is Maria O'brien located?

Maria O'brien practices at 41680 Miss Bessie Dr Ste 301, Leonardtown, MD 20650. The listed phone number is (301) 997-0055.

What is Maria O'brien's specialty?

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

Is Maria O'brien enrolled in Medicare?

Yes. Maria O'brien is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Maria O'brien was last updated on January 24, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.