DR. FREDERICK GREINER BARR M.D.
NPI 1184620122
Internal Medicine - Hematology & Oncology in Chevy Chase, MD

Q: What is Frederick Barr's NPI number?

The NPI number for Frederick Barr is 1184620122. It was assigned to this individual provider in the NPPES registry on June 23, 2005.

Q: What is Frederick Barr's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Frederick Barr was last updated on November 23, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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 June 23, 2005

89.03/100

CMS Quality Rating

5454 WISCONSIN AVE, STE 1300, CHEVY CHASE, MD 20815(301) 657-8587(301) 654-3958 Get Directions Write a Review

NPPES record last updated: November 23, 2010. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Dr. Frederick Greiner Barr M.d. NPPES

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

DR. FREDERICK GREINER BARR M.D. (NPI 1184620122) is an individual hematology & oncology provider in Chevy Chase, Maryland, licensed in Maryland (D22775) and active in the NPI registry since June 2005.

NPPES Registry Identity

NPI1184620122

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameDR. FREDERICK GREINER BARRCredential: M.D.

Location Address5454 WISCONSIN AVE, STE 1300Chevy Chase, MD 20815-6908

Mailing Address5454 Wisconsin Ave, Ste 1300Chevy Chase, MD 20815-6908 · (301) 657-8587 · Fax (301) 654-3958

Phone(301) 657-8587

Fax(301) 654-3958

Sole ProprietorYes

Enumeration DateJune 23, 2005

Last NPPES UpdateNovember 23, 2010

✔ NPI 1184620122 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in MD · D22775

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

5454 WISCONSIN AVE, Chevy Chase, MD 20815

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Other Identifiers 2

Medicare UPINC88292

Medicare PING00984DC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

Areas of Expertise CMS Part B claims 16

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, darbepoetin alfa, 1 microgram (non-esrd use) J0881

Darbepoetin alfa injection is a medication used to treat anemia (low red blood cell count) often caused by chronic kidney disease or chemotherapy. It works by stimulating your body to produce more red blood cells, helping to increase your energy and well-being.

24,800 services21 patients

Injection, epoetin alfa, (for non-esrd use), 1000 units J0885

Epoetin alfa is a medication injected to help your body produce more red blood cells, improving energy levels and reducing tiredness. It's often used for patients with certain types of anemia. Each injection contains 1000 units of the medicine.

10,064 services23 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.

3,600 services17 patients

Injection, ferric derisomaltose, 10 mg J1437

Ferric derisomaltose is an iron replacement product. It's given as an injection to treat iron deficiency anemia, a condition where the body lacks enough iron. The injection helps increase iron in your body to healthy levels.

3,500 services29 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

1,131 services259 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

1,126 services276 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

437 services50 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.

389 services149 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.

247 services180 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.

166 services47 patients

Unclassified drugs J3490

Unclassified drugs are medications that don't fit into an existing category or class due to their unique properties or uses. They may be used for various conditions and their effects may differ widely. Always ask your healthcare provider for more information about these drugs.

64 services31 patients

Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less 96367

This procedure involves injecting fluids or medication directly into your vein. It's used for treatment, prevention, or diagnosis. An additional sequential infusion may be given within an hour if needed. This helps to ensure the medicine is distributed effectively in your body.

60 services26 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.

57 services11 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.

36 services36 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.

32 services13 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.

29 services19 patients

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.

89.03/100

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

Scored as part of a group practice

Quality

72.59

Improvement Activities

Cost

100

Reported Quality Measures

Advance Care Plan

83%534 patients4/55-star benchmark: 100%

Breast Cancer Screening

21%228 patients1/55-star benchmark: 93%

Colorectal Cancer Screening

16%404 patients1/55-star benchmark: 88%

Documentation of Current Medications in the Medical Record

67%1,872 patients3/55-star benchmark: 100%

Oncology: Medical and Radiation - Pain Intensity Quantified

85%171 patients4/55-star benchmark: 100%

Preventive Care and Screening: Screening for Depression and Follow-Up Plan

90%817 patients4/55-star benchmark: 97%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients screened: 95% · 405 patients

94%405 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

MEDSTAR MEDICAL GROUP II LLC

General Practice

5454 WISCONSIN AVE, BARLOW BUILDING, 11TH FLOOR
CHEVY CHASE, MD 20815

Montgomery County (855) 605-2225

DR. MICHAEL LLOYD GITTLESON DPM

Podiatrist

5454 WISCONSIN AVE, #1250
CHEVY CHASE, MD 20815

Montgomery County (301) 986-4900

DR. RANDALL JEFFREY LEWIS M.D.

Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery)

5454 WISCONSIN AVE, SUITE 1000
CHEVY CHASE, MD 20815

Montgomery County (301) 657-1996

DR. I-JUN LIN-KUNG D.D.S.

Dentist (General Practice)

5454 WISCONSIN AVE, SUITE 635
CHEVY CHASE, MD 20815

Montgomery County (301) 986-1988

WASHINGTON EYE PHYSICIANS & SURGEONS, P.C.

Ophthalmology

5454 WISCONSIN AVE, STE 950
CHEVY CHASE, MD 20815

Montgomery County (301) 657-5700

MR. KEVIN A HARDY DPT

Physical Therapist

5454 WISCONSIN AVE, SUITE 600- PHYSICAL THERAPY
CHEVY CHASE, MD 20815

Montgomery County (301) 942-0442

VIVIAN M FRAGA M.D.

Obstetrics & Gynecology

5454 WISCONSIN AVE, SUITE 1005
CHEVY CHASE, MD 20815

Montgomery County (301) 654-2182

DR. DESPINA M MARKOGIANNAKIS DDS

Dentist

5454 WISCONSIN AVE, SUITE 835
CHEVY CHASE, MD 20815

Montgomery County (301) 652-0656

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 Frederick Barr's NPI number?

The NPI number for Frederick Barr is 1184620122. It was assigned to this individual provider in the NPPES registry on June 23, 2005.

Where is Frederick Barr located?

Frederick Barr practices at 5454 Wisconsin Ave Ste 1300, Chevy Chase, MD 20815. The listed phone number is (301) 657-8587.

What is Frederick Barr's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

What insurance does Frederick Barr accept?

Health plans from CareSource list Frederick Barr 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.

When was this NPI record last updated?

The NPPES record for Frederick Barr was last updated on November 23, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.