2026 NPPES data Hematology & Oncology Physician NPI 1134202393 M.D.
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Jennifer Garst, M.D.

Hematology & Oncology Physician in Durham, North Carolina. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 11,215 in Hematology & Oncology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
908
Medicare Part D claims · 97 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Jennifer Garst, M.D. filed 908 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in Durham, North Carolina, prescribing 85% generic.

908
Part D claims, 2023
85%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Jennifer Garst, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

908 Top 25% higher than 75% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic, not verified)

Jennifer Garst, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Jennifer Garst, M.D.?

Quality data not reported

NPI registry status

Active

Issued 10/23/2006

NPI 1134202393

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

908 7% vs specialty avg

2023 prescription claims

Specialty avg: 847

Specialty distribution in North Carolina

How Hematology & Oncology Physician compares to other specialties among North Carolina providers

North Carolina providers

Largest specialties in North Carolina (% of in-state providers)

Clinical Social Worker - 7.1%Clinical Social Worker7.1%Behavior Technician - 6.4%Behavior Technician6.4%Pharmacist - 5%Pharmacist5%Student in an Organized Health Care Education/Training Program - 4.5%Student in an Organized Health Care Education/Training Program4.5%Physical Therapist - 4.3%Physical Therapist4.3%Physician Assistant - 4.2%Physician Assistant4.2%Hematology & Oncology Physician - 0.2%Hematology & Oncology Physician0.2%
Largest specialties in North Carolina (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Hematology & Oncology Physician. Verify directly:

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Jennifer Garst, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 4101 N ROXBORO ST, Durham, NC, 27704, with a listed phone of (919) 684-8111. NPI 1134202393 was issued on 10/23/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Garst most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 908 prescription claims written by this provider, covering 97 Medicare beneficiaries and totaling roughly $645K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 14.3%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

4101 N ROXBORO ST
Durham, NC 27704

Provider Details

NPI 1134202393
Specialty Hematology & Oncology Physician
Credentials M.D.
Gender Female
NPI Issued 10/23/2006

Brand vs generic prescribing mix · Typical

Jennifer Garst, M.D. - brand share 15.0%
Hematology & Oncology Physician average

15% brand-name claims vs 85% generic, on 908 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

908
Total Claims
$645K
Total Drug Cost
97
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,185
Total Day Supply
31,405
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$548K
Generic Drug Cost
$97K
Opioid Claims
130 (14.3% rate)
Antibiotic Claims
46

Patient Demographics

Average Patient Age
72.9 years
Avg HCC Risk Score
2.97
Gender Split
57% female / 43% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Jennifer Garst, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Oxycodone Hcl
90
Levothyroxine Sodium
39
Vitamin D2
Ergocalciferol (Vitamin D2)
38
Potassium Chloride
34
Albuterol Sulfate Hfa
Albuterol Sulfate
31
Ondansetron Hcl
31
Prednisone
30
Lorazepam
29
Clonazepam
24
Methylprednisolone
24

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Hematology & Oncology Physician Overview

How Jennifer Garst, M.D. fits within the Hematology & Oncology Physician landscape nationally.

11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider

Jennifer Garst, M.D.'s 908 claims are above the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Garst.

Compare Hematology & Oncology Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the North Carolina medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Hematology & Oncology Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Jennifer Garst, M.D.'s specialty?
Jennifer Garst, M.D. specializes in Hematology & Oncology Physician and practices in Durham, North Carolina. Credentials: M.D..
How much does Jennifer Garst, M.D. prescribe under Medicare Part D?
In 2023, Jennifer Garst, M.D. wrote 908 Medicare Part D claims totaling $645K in drug costs for 97 beneficiaries.
Where is Jennifer Garst, M.D. located?
Jennifer Garst, M.D. is located at 4101 N ROXBORO ST, Durham, NC, 27704. Phone: (919) 684-8111.
What is Jennifer Garst, M.D.'s NPI number?
Jennifer Garst, M.D.'s National Provider Identifier (NPI) is 1134202393, issued on 10/23/2006.
Does Jennifer Garst, M.D. prescribe more brand-name or generic drugs?
Jennifer Garst, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $548K in brand drug costs.
Does Jennifer Garst, M.D. prescribe opioids?
Yes, Jennifer Garst, M.D. had 130 opioid claims in 2023 with an opioid prescribing rate of 14.3%.
How many Hematology & Oncology Physician providers are there in the US?
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does Jennifer Garst, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Jennifer Garst, M.D.'s most frequently prescribed drugs include Oxycodone Hcl, Levothyroxine Sodium, Vitamin D2. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jennifer Garst, M.D. accept Medicare?
Jennifer Garst, M.D. appears in CMS Medicare data with 908 Part D claims and 97 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jennifer Garst, M.D.'s credentials?
Jennifer Garst, M.D.'s NPI is 1134202393 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology

Compiled from official public sources by the PlainDoctor editorial team.