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


Quality Rating: 89.03 out of 100 score

NPI Status: Active since June 23, 2005

Contact Information

5454 WISCONSIN AVE
STE 1300
CHEVY CHASE, MD
ZIP 20815
Phone: (301) 657-8587
Fax: (301) 654-3958

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Prescription History for Informed Healthcare Decisions

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. FREDERICK GREINER BARR M.D., an active Hematology & Oncology specialist practicing in Chevy Chase, MD. Our medical registry currently tracks 13 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 232 documented patient claims. Among these therapy options, the most frequently utilized medication is Anastrozole, which accounts for 53 claims alone.


Alprazolam

Generic Formulation: AlprazolamSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 11
30-Day Fills 13.0
Days Supply 390
MD State Average Benchmarks
Peer Average Claims44.0
Peer Average 30-Day Fills50.1
Peer Average Days Supply1,349
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 75.0% less volume than the regional standard for practitioners inside MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $189.05 across this reporting matrix range.

Provider Avg Cost Per Claim

$17.19

State Avg Cost Per Claim

$10.00

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A triazolobenzodiazepine compound with antianxiety and sedative-hypnotic actions, that is efficacious in the treatment of PANIC DISORDERS, with or without AGORAPHOBIA, and in generalized ANXIETY DISORDERS. (From AMA Drug Evaluations Annual, 1994, p238)

Therapeutic Applications

Alprazolam is used to treat anxiety and panic disorders. It belongs to a class of medications called benzodiazepines which act on the brain and nerves (central nervous system) to produce a calming effect. It works by enhancing the effects of a certain natural chemical in the body (GABA).

Anastrozole

Generic Formulation: AnastrozoleSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 53
30-Day Fills 159.0
Days Supply 4,770
MD State Average Benchmarks
Peer Average Claims59.0
Peer Average 30-Day Fills150.7
Peer Average Days Supply4,508
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $1,882.97 across this reporting matrix range.

Provider Avg Cost Per Claim

$35.53

State Avg Cost Per Claim

$27.06

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A nitrile and triazole derivative that acts as a selective nonsteroidal aromatase inhibitor. It is used in the treatment of ESTROGEN NUCLEAR RECEPTOR-positive breast cancer in postmenopausal women.

Therapeutic Applications

Anastrozole is used to treat breast cancer in women after menopause. Some breast cancers are made to grow faster by a natural hormone called estrogen. Anastrozole decreases the amount of estrogen the body makes and helps to slow or reverse the growth of these breast cancers.

Eliquis

Generic Formulation: ApixabanSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 19
30-Day Fills 38.0
Days Supply 1,097
MD State Average Benchmarks
Peer Average Claims65.0
Peer Average 30-Day Fills112.6
Peer Average Days Supply3,167
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 70.8% less volume than the regional standard for practitioners inside MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $21,725.05 across this reporting matrix range.

Provider Avg Cost Per Claim

$1,143.42

State Avg Cost Per Claim

$880.48

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

Apixaban is used to prevent serious blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip/knee replacement surgery. With atrial fibrillation, part of the heart does not beat the way it should. This can lead to blood clots forming, which can travel to other parts of your body (such as the lungs or legs) or increase your risk for stroke. In the United States, apixaban is also approved to treat certain types of blood clots (deep vein thrombosis-DVT, pulmonary embolus-PE) and to prevent them from forming again. Apixaban is an anticoagulant that works by blocking certain clotting proteins in your blood.

Jakafi

Generic Formulation: Ruxolitinib PhosphateSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 35
30-Day Fills 35.0
Days Supply 1,050
MD State Average Benchmarks
Peer Average Claims20.0
Peer Average 30-Day Fills21.2
Peer Average Days Supply632
Highly Elevated Utilization

This provider exhibits a high preference for this treatment path, registering a volume 75.0% higher than the standard regional baseline profile for MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $488,688.77 across this reporting matrix range.

Provider Avg Cost Per Claim

$13,962.54

State Avg Cost Per Claim

$17,580.89

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

This medication is used to treat certain bone marrow disorders (myelofibrosis, polycythemia vera). It works by blocking your body from producing substances called growth factors. Growth factors cause cells to grow and divide, and cause the blood cell and spleen problems found in these disorders. Ruxolitinib belongs to a class of drugs known as kinase inhibitors. Though not a cure for these disorders, ruxolitinib may help with some of the symptoms, including abdominal discomfort, pain under left ribs, early feelings of fullness from meals, night sweats, itching, and bone/muscle pain. Ruxolitinib is also used to treat a certain problem that may occur after certain stem cell or bone marrow transplants (graft versus host disease). It works by weakening your body's defense system (immune system).

Lenalidomide

Generic Formulation: LenalidomideSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 11
30-Day Fills 11.0
Days Supply 308
MD State Average Benchmarks
Peer Average Claims35.0
Peer Average 30-Day Fills35.9
Peer Average Days Supply966
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 68.6% less volume than the regional standard for practitioners inside MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $184,313.93 across this reporting matrix range.

Provider Avg Cost Per Claim

$16,755.81

State Avg Cost Per Claim

$12,598.48

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A phthalimide and piperidone derivative that has immunomodulatory and antiangiogenic properties. It is used for the treatment of transfusion-dependent anemia in MYELODYSPLASTIC SYNDROMES, and for the treatment of MULTIPLE MYELOMA, and relapsed or refractory MANTLE CELL LYMPHOMA.

Therapeutic Applications

Lenalidomide is used to treat various types of cancers. It works by slowing or stopping the growth of cancer cells. It is also used to treat anemia in patients with certain blood/bone marrow disorders (myelodysplastic syndromes-MDS). Lenalidomide may lessen the need for blood transfusions. Lenalidomide is not recommended for the treatment of a certain type of cancer (chronic lymphocytic leukemia) because of the increased risk of serious heart-related side effects and death. If you have this type of cancer, talk to your doctor about the risks of using this medication.

Letrozole

Generic Formulation: LetrozoleSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 13
30-Day Fills 37.0
Days Supply 1,110
MD State Average Benchmarks
Peer Average Claims46.0
Peer Average 30-Day Fills111.4
Peer Average Days Supply3,331
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 71.7% less volume than the regional standard for practitioners inside MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $470.06 across this reporting matrix range.

Provider Avg Cost Per Claim

$36.16

State Avg Cost Per Claim

$28.06

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A triazole and benzonitrile derivative that is a selective non-steroidal aromatase inhibitor, similar to ANASTROZOLE. It is used in the treatment of metastatic or locally advanced breast cancer in postmenopausal women.

Therapeutic Applications

This medication is used to treat certain types of breast cancer (such as hormone-receptor-positive breast cancer) in women after menopause. Letrozole is also used to help prevent the cancer from returning. Some breast cancers are made to grow faster by a natural hormone called estrogen. Letrozole decreases the amount of estrogen the body makes and helps to slow or reverse the growth of these breast cancers.

Levothyroxine Sodium

Generic Formulation: Levothyroxine SodiumSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 11
30-Day Fills 32.8
Days Supply 983
MD State Average Benchmarks
Peer Average Claims101.0
Peer Average 30-Day Fills241.9
Peer Average Days Supply7,165
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 89.1% less volume than the regional standard for practitioners inside MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $127.85 across this reporting matrix range.

Provider Avg Cost Per Claim

$11.62

State Avg Cost Per Claim

$18.62

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

The major hormone derived from the thyroid gland. Thyroxine is synthesized via the iodination of tyrosines (MONOIODOTYROSINE) and the coupling of iodotyrosines (DIIODOTYROSINE) in the THYROGLOBULIN. Thyroxine is released from thyroglobulin by proteolysis and secreted into the blood. Thyroxine is peripherally deiodinated to form TRIIODOTHYRONINE which exerts a broad spectrum of stimulatory effects on cell metabolism.

Therapeutic Applications

Levothyroxine is used to treat an underactive thyroid (hypothyroidism). It replaces or provides more thyroid hormone, which is normally produced by the thyroid gland. Low thyroid hormone levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery. Having enough thyroid hormone is important for maintaining normal mental and physical activity. In children, having enough thyroid hormone is important for normal mental and physical development. This medication is also used to treat other types of thyroid disorders (such as thyroid cancer). This medication should not be used to treat infertility unless it is caused by low thyroid hormone levels.

Lisinopril

Generic Formulation: LisinoprilSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 13
30-Day Fills 21.0
Days Supply 630
MD State Average Benchmarks
Peer Average Claims87.0
Peer Average 30-Day Fills220.9
Peer Average Days Supply6,576
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 85.1% less volume than the regional standard for practitioners inside MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $97.72 across this reporting matrix range.

Provider Avg Cost Per Claim

$7.52

State Avg Cost Per Claim

$9.85

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

One of the ANGIOTENSIN-CONVERTING ENZYME INHIBITORS (ACE inhibitors), orally active, that has been used in the treatment of hypertension and congestive heart failure.

Therapeutic Applications

Lisinopril is used to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. It is also used to treat heart failure and to improve survival after a heart attack. Lisinopril belongs to a class of drugs known as ACE inhibitors. It works by relaxing blood vessels so blood can flow more easily.

Novolin N Flexpen

Generic Formulation: Insulin Nph Human IsophaneSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 11
30-Day Fills 12.7
Days Supply 381
MD State Average Benchmarks
Peer Average Claims11.0
Peer Average 30-Day Fills11.0
Peer Average Days Supply206
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $5,433.23 across this reporting matrix range.

Provider Avg Cost Per Claim

$493.93

State Avg Cost Per Claim

$65.91

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Prednisone

Generic Formulation: PrednisoneSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 15
30-Day Fills 15.0
Days Supply 421
MD State Average Benchmarks
Peer Average Claims39.0
Peer Average 30-Day Fills50.6
Peer Average Days Supply992
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 61.5% less volume than the regional standard for practitioners inside MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $155.61 across this reporting matrix range.

Provider Avg Cost Per Claim

$10.37

State Avg Cost Per Claim

$7.04

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A synthetic anti-inflammatory glucocorticoid derived from CORTISONE. It is biologically inert and converted to PREDNISOLONE in the liver.

Therapeutic Applications

Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders. Prednisone belongs to a class of drugs known as corticosteroids. It decreases your immune system's response to various diseases to reduce symptoms such as swelling and allergic-type reactions.

Revlimid

Generic Formulation: LenalidomideSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 14
30-Day Fills 14.0
Days Supply 392
MD State Average Benchmarks
Peer Average Claims38.0
Peer Average 30-Day Fills38.9
Peer Average Days Supply1,054
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 63.2% less volume than the regional standard for practitioners inside MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $239,542.34 across this reporting matrix range.

Provider Avg Cost Per Claim

$17,110.17

State Avg Cost Per Claim

$18,099.73

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A phthalimide and piperidone derivative that has immunomodulatory and antiangiogenic properties. It is used for the treatment of transfusion-dependent anemia in MYELODYSPLASTIC SYNDROMES, and for the treatment of MULTIPLE MYELOMA, and relapsed or refractory MANTLE CELL LYMPHOMA.

Therapeutic Applications

Lenalidomide is used to treat various types of cancers. It works by slowing or stopping the growth of cancer cells. It is also used to treat anemia in patients with certain blood/bone marrow disorders (myelodysplastic syndromes-MDS). Lenalidomide may lessen the need for blood transfusions. Lenalidomide is not recommended for the treatment of a certain type of cancer (chronic lymphocytic leukemia) because of the increased risk of serious heart-related side effects and death. If you have this type of cancer, talk to your doctor about the risks of using this medication.

Rosuvastatin Calcium

Generic Formulation: Rosuvastatin CalciumSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 13
30-Day Fills 39.0
Days Supply 1,170
MD State Average Benchmarks
Peer Average Claims72.0
Peer Average 30-Day Fills197.1
Peer Average Days Supply5,898
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 81.9% less volume than the regional standard for practitioners inside MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $225.52 across this reporting matrix range.

Provider Avg Cost Per Claim

$17.35

State Avg Cost Per Claim

$60.82

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A HYDROXYMETHYLGLUTARYL-COA-REDUCTASE INHIBITOR, or statin, that reduces the plasma concentrations of LDL-CHOLESTEROL; APOLIPOPROTEIN B, and TRIGLYCERIDES while increasing HDL-CHOLESTEROL levels in patients with HYPERCHOLESTEROLEMIA and those at risk for CARDIOVASCULAR DISEASES.

Therapeutic Applications

Rosuvastatin is used along with a proper diet to help lower bad cholesterol and fats (such as LDL, triglycerides) and raise good cholesterol (HDL) in the blood. It belongs to a group of drugs known as statins. It works by reducing the amount of cholesterol made by the liver. Lowering bad cholesterol and triglycerides and raising good cholesterol decreases the risk of heart disease and helps to prevent strokes and heart attacks. In addition to eating a proper diet (such as a low cholesterol/low-fat diet), other lifestyle changes that may help this medication work better include exercising, losing weight if overweight, and stopping smoking. Talk with your doctor for more details.

Xarelto

Generic Formulation: RivaroxabanSpecialty: Medical Oncology
Provider Metrics Summary
Total Claims 13
30-Day Fills 25.0
Days Supply 750
MD State Average Benchmarks
Peer Average Claims37.0
Peer Average 30-Day Fills72.1
Peer Average Days Supply2,065
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 64.9% less volume than the regional standard for practitioners inside MD. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $13,502.92 across this reporting matrix range.

Provider Avg Cost Per Claim

$1,038.69

State Avg Cost Per Claim

$986.80

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A morpholine and thiophene derivative that functions as a FACTOR XA INHIBITOR and is used in the treatment and prevention of DEEP-VEIN THROMBOSIS and PULMONARY EMBOLISM. It is also used for the prevention of STROKE and systemic embolization in patients with non-valvular ATRIAL FIBRILLATION, and for the prevention of atherothrombotic events in patients after an ACUTE CORONARY SYNDROME.

Therapeutic Applications

Rivaroxaban is used to prevent blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip or knee replacement surgery. It is also used to prevent blood clots from forming in high-risk patients with limited mobility during their hospital stay and after discharge. In addition, rivaroxaban is used to treat blood clots (such as in deep vein thrombosis-DVT or pulmonary embolus-PE) and to prevent the blood clots from forming again. Rivaroxaban may be used in children to prevent blood clots from forming after a certain heart surgery (Fontan procedure). Rivaroxaban is an anticoagulant that works by blocking certain clotting proteins in your blood.

Dataset Methodology & CMS Source Information

This analytical profile maps public infrastructure records sourced directly from official **Centers for Medicare & Medicaid Services (CMS)** public data releases. The statistics above track documented pharmaceutical treatment trends assigned to beneficiaries specifically under federal public programs. Evaluating the prescriptive footprints of clinical practitioners like DR. FREDERICK GREINER BARR M.D. provides transparency into local medical care patterns within Chevy Chase, MD.

Key Learning Objectives for this Profile:

  • Prescribing Frequencies: Track and evaluate the volume metrics of specific brand-name and generic medical formulas chosen by this provider over time.
  • Clinical Focus Areas: Identify how the provider distributes therapeutic selections across medical care options to gain insight into their true day-to-day **Hematology & Oncology** practice concentrations.
  • Program Cost Awareness: Review the calculated total systemic drug costs and raw transactional volumes linked to these orders to better anticipate network insurance coverage structures.
  • Patient-Centered Evaluation: Cross-reference localized regional care comparisons to align practitioner habits directly with your proactive health maintenance goals.

Data Scope Exclusion & Limitations: The data elements presented above explicitly reflect prescription orders processed for Medicare beneficiaries during the year 2023. This informational profile does not aggregate prescription data for individuals utilizing private commercial health plans, state Medicaid coverage, or self-pay options. However, because medical decision-making remains highly consistent across clinical settings, this public registry provides a reliable proxy for understanding the general prescribing preferences and pharmaceutical care approach used by this provider.