2026 NPPES data Hematology & Oncology Physician NPI 1730250705 MD
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Gary Buchschacher Jr., MD

Hematology & Oncology Physician in Los Angeles, California. 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
302
Medicare Part D claims · 60 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
81%
generic claims · 19% 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

Gary Buchschacher Jr., MD filed 302 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in Los Angeles, California, prescribing 81% generic.

302
Part D claims, 2023
81%
generic prescribing
Likely
board-certified (heuristic)

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.

Gary Buchschacher Jr., MD's Medicare Part D volume vs every U.S. prescriber

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

302 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 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 certification likely (heuristic, not verified)

Gary Buchschacher Jr., MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Gary Buchschacher Jr., MD?

Quality data not reported

NPI registry status

Active

Issued 11/13/2006

NPI 1730250705

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

302 64% vs specialty avg

2023 prescription claims

Specialty avg: 847

Specialty distribution in California

How Hematology & Oncology Physician compares to other specialties among California providers

California providers
Behavior Technician - 17.3%Behavior Technician17.3%Marriage & Family Therapist - 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Pharmacist - 3.5%Pharmacist3.5%Clinical Social Worker - 3.1%Clinical Social Worker3.1%Hematology & Oncology Physician - 0.1%Hematology & Oncology Physician0.1%
Largest specialties in California (% 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).

Gary Buchschacher Jr., MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 4733 W SUNSET BLVD, Los Angeles, CA, 90027, with a listed phone of (323) 783-4011. NPI 1730250705 was issued on 11/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Buchschacher Jr. 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 302 prescription claims written by this provider, covering 60 Medicare beneficiaries and totaling roughly $729K in drug spend, split 19% brand-name and 81% generic by claim count. 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

4733 W SUNSET BLVD
Los Angeles, CA 90027

Provider Details

NPI 1730250705
Specialty Hematology & Oncology Physician
Credentials MD
Gender Male
NPI Issued 11/13/2006

Hospital and facility affiliations

Facilities where Gary Buchschacher Jr., MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

Southern California Permanente Medical Group
Los Angeles, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context - California MBC 2023 annual report

Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Gary Buchschacher Jr., MD. To verify Gary Buchschacher Jr., MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

Gary Buchschacher Jr., MD - brand share 19.0%
Hematology & Oncology Physician average

19% brand-name claims vs 81% generic, on 302 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.

302
Total Claims
$729K
Total Drug Cost
60
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
664
Total Day Supply
19,524
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$700K
Generic Drug Cost
$29K

Patient Demographics

Average Patient Age
78.4 years
Avg HCC Risk Score
2.17
Gender Split
70% female / 30% male
Age Distribution
<65: 0, 65-74: 20, 75-84: 28, 85+: 12

Top Prescribed Drugs (Medicare Part D)

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

What Gary Buchschacher Jr., MD 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
Anastrozole
59
Abiraterone Acetate
30
Alendronate Sodium
26
Prednisone
26
Ibrance
Palbociclib
25
Tamoxifen Citrate
21
Bicalutamide
20
Xtandi
Enzalutamide
17
Imatinib Mesylate
12
Exemestane
11

* 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 Gary Buchschacher Jr., MD 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

Gary Buchschacher Jr., MD's 302 claims are below the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Buchschacher Jr..

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 California 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 Gary Buchschacher Jr., MD's specialty?
Gary Buchschacher Jr., MD specializes in Hematology & Oncology Physician and practices in Los Angeles, California. Credentials: MD.
How much does Gary Buchschacher Jr., MD prescribe under Medicare Part D?
In 2023, Gary Buchschacher Jr., MD wrote 302 Medicare Part D claims totaling $729K in drug costs for 60 beneficiaries.
Where is Gary Buchschacher Jr., MD located?
Gary Buchschacher Jr., MD is located at 4733 W SUNSET BLVD, Los Angeles, CA, 90027. Phone: (323) 783-4011.
What is Gary Buchschacher Jr., MD's NPI number?
Gary Buchschacher Jr., MD's National Provider Identifier (NPI) is 1730250705, issued on 11/13/2006.
Does Gary Buchschacher Jr., MD prescribe more brand-name or generic drugs?
Gary Buchschacher Jr., MD's prescribing is 19% brand-name and 81% generic drugs by claim count, with $700K in brand drug costs.
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 Gary Buchschacher Jr., MD prescribe most often?
Based on 2023 Medicare Part D data, Gary Buchschacher Jr., MD's most frequently prescribed drugs include Anastrozole, Abiraterone Acetate, Alendronate Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gary Buchschacher Jr., MD accept Medicare?
Gary Buchschacher Jr., MD appears in CMS Medicare data with 302 Part D claims and 60 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gary Buchschacher Jr., MD's credentials?
Gary Buchschacher Jr., MD's NPI is 1730250705 with credentials MD. 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.