DR. ROBERT O'BRIAN M.D.
NPI 1730140724
Internal Medicine - Rheumatology in Eldersburg, MD

Q: What is Robert O'brian's NPI number?

The NPI number for Robert O'brian is 1730140724. It was assigned to this individual provider in the NPPES registry on March 29, 2006.

Q: What is Robert O'brian's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Q: When was this NPI record last updated?

The NPPES record for Robert O'brian was last updated on October 6, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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 March 29, 2006PECOS EnrolledAccepts Medicare Assignment

94.6/100

CMS Quality Rating

6190 GEORGETOWN BLVD, SUITE 110, ELDERSBURG, MD 21784(410) 795-9700(410) 795-7500 Get Directions Write a Review

NPPES record last updated: October 6, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Robert O'brian M.d. NPPES

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

DR. ROBERT O'BRIAN M.D. (NPI 1730140724) is an individual rheumatology provider in Eldersburg, Maryland, licensed in North Carolina (9901590) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Frederick Health Hospital, and is a graduate of George Washington University School Of Medicine (1998).

NPPES Registry Identity

NPI1730140724

Entity TypeIndividualMale

Primary Taxonomy207RR0500X

Provider Legal NameDR. ROBERT O'BRIANCredential: M.D.

Location Address6190 GEORGETOWN BLVD, SUITE 110Eldersburg, MD 21784

Mailing Address6190 Georgetown Blvd, Suite 110Eldersburg, MD 21784 · (410) 795-9700 · Fax (410) 795-7500

Phone(410) 795-9700

Fax(410) 795-7500

Sole ProprietorNo

Medical School CMSGeorge Washington University School Of MedicineGraduated 1998

Enumeration DateMarch 29, 2006

Last NPPES UpdateOctober 6, 2020

NPPES CertifiedOctober 6, 2020

✔ NPI 1730140724 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

License✔ Licensed in NC · 9901590

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

6190 GEORGETOWN BLVD, Eldersburg, MD 21784

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Robert O'brian M.d. 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 ID7719138049

PECOS Enrollment IDI20200520000079

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.

Medicare Billing Reassignment

Medicare enrollment records show Robert O'brian reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Eldersburg Arthritis LLC

Same address

Rheumatology

6190 GEORGETOWN BLVD STE 110
Eldersburg, MD 21784

Reassigned Medicare billing, Maryland enrollment
4 clinicians in this Medicare group

NPI 1588800858 (410) 795-9700

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 15

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.

Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) J0129

Abatacept is a medication administered via injection under a doctor's supervision. It's used to treat conditions like rheumatoid arthritis by moderating the immune system. This code applies when the doctor administers the drug, not for self-administration.

8,100 services25 patients

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

4,680 services48 patients

Injection, golimumab, 1 mg, for intravenous use J1602

Golimumab is a medication given through an IV (a small tube in your vein). It helps to reduce inflammation and pain by blocking a protein in your body that causes inflammation. It's often used to treat conditions like rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis.

4,400 services12 patients

Injection, infliximab, excludes biosimilar, 10 mg J1745

Infliximab is a medication given via injection to treat certain autoimmune conditions. It works by blocking the action of a substance in your body that causes inflammation. Each dose is based on your medical condition and response to treatment.

1,690 services17 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.

525 services279 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

229 services69 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

169 services56 patients

Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle 96401

This procedure involves giving anti-cancer drugs, which don't contain hormones, into the muscle or under the skin. These drugs help to stop the growth of cancer cells. The process is usually quick and done by a healthcare professional.

135 services58 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

93 services62 patients

Injection, zoledronic acid, 1 mg J3489

Zoledronic acid is a medication given via injection to strengthen bones. It's often used in patients with osteoporosis or certain types of cancer. The injection helps reduce the risk of fractures and other bone complications.

90 services18 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.

66 services48 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

63 services63 patients

Injection of additional new drug or substance into vein 96375

This procedure involves introducing a new medication or substance into your bloodstream via a vein. It's typically done using a small needle. The substance can help treat various conditions or assist in diagnostic procedures. It's generally safe and monitored by professionals.

24 services12 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

18 services18 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.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Frederick Health Hospital

Acute Care Hospitals · Frederick, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210005

Location400 West Seventh StFrederick, MD 21701 · Frederick County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21784 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

$139.05 typical visit price

range $60.73 – $183.44

Typical copayment $34.76 (range $15.18 – $45.86)

Most-billed visit code 99204

Established Patient

$106.59 typical visit price

range $19.60 – $149.17

Typical copayment $26.64 (range $4.90 – $37.29)

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.

94.6/100

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

Scored as part of a group practice

Quality

89.2

Improvement Activities

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.

SINAI HOSPITAL OF BALTIMORE INC

Surgery

6190 GEORGETOWN BLVD, SUITE 104
ELDERSBURG, MD 21784

Carroll County (410) 356-0410

MR. DONALD L HALL LCADC

Counselor (Addiction (Substance Use Disorder))

6190 GEORGETOWN BLVD, SUITE 105
ELDERSBURG, MD 21784

Carroll County (410) 552-9004

LIFEBRIDGE SPORTS MEDICINE AND REHABILITATION LLC

Clinic/Center (Rehabilitation)

6190 GEORGETOWN BLVD
ELDERSBURG, MD 21784

Carroll County (410) 552-4235

MRS. SANDRA K SAVILLE LCSW-C

Social Worker (Clinical)

6190 GEORGETOWN BLVD, SUITE 105
ELDERSBURG, MD 21784

Carroll County (410) 552-9004

SINAI HOSPITAL OF BALTIMORE

Surgery

6190 GEORGETOWN BLVD
ELDERSBURG, MD 21784

Carroll County (410) 552-4202

MS. JENNIFER RENEE CARMICHAEL PT

Physical Therapist

6190 GEORGETOWN BLVD
ELDERSBURG, MD 21784

Carroll County (410) 552-4235

KRISTEN ALLARD CRNP

Nurse Practitioner (Family)

6190 GEORGETOWN BLVD
ELDERSBURG, MD 21784

Carroll County (410) 552-5050

LIFEBRIDGE SPORTS MEDICINE AND REHABILITATION LLC

Clinic/Center (Rehabilitation)

6190 GEORGETOWN BLVD
ELDERSBURG, MD 21784

Carroll County (410) 552-4235

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 Robert O'brian's NPI number?

The NPI number for Robert O'brian is 1730140724. It was assigned to this individual provider in the NPPES registry on March 29, 2006.

Where is Robert O'brian located?

Robert O'brian practices at 6190 Georgetown Blvd Suite 110, Eldersburg, MD 21784. The listed phone number is (410) 795-9700.

What is Robert O'brian's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Robert O'brian enrolled in Medicare?

Yes. Robert O'brian 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.

Which organization bills Medicare for Robert O'brian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert O'brian reassigns Medicare benefits to Eldersburg Arthritis LLC (Eldersburg, MD). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Robert O'brian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Robert O'brian affiliated with any hospitals?

According to CMS data, Robert O'brian is affiliated with Frederick Health Hospital.

When was this NPI record last updated?

The NPPES record for Robert O'brian was last updated on October 6, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.