NPI registry status
Active
2026 NPPES data Surgical Oncology Physician NPI 1548243033 M.D.
Verify on CMS → Gregory Graves, M.D.
Surgical Oncology Physician in Sacramento, 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 1,410 in Surgical 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
184
Medicare Part D claims · 100 beneficiaries · Surgical Oncology Physician avg: 97
MIPS score
75.3/100
▼ 8 pts below national avg 83.1 · Above neutral
Industry payments
$12.3K
28 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gregory Graves, M.D. reported a CMS MIPS final score of 75.3/100 - below the 83.1 national average - and filed 184 Medicare Part D claims in 2023.
- 75.3/100
- MIPS score · -8 vs avg
- 184
- Part D claims, 2023
- 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.
Gregory Graves, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
75 15th percentile higher than 15% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Gregory Graves, M.D. sits
This provider among surgical oncology physician peers
Across the 416 surgical oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Gregory Graves, M.D. writes more Part D claims than 86% of them and scores higher on MIPS quality than 13% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one surgical oncology physician peer from a representative sample of 60; the gold marker is Gregory Graves, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Gregory Graves, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Gregory Graves, M.D.?
Below national averagePrimary specialty
Surgical Oncology Physician
Medicare Part D claims
184 90% vs specialty avg
MIPS final score
75.3/100 7.8 pts vs avg
Specialty distribution in California
How Surgical Oncology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Gregory Graves, M.D.'s 2023 MIPS final score plotted against the Surgical Oncology Physician national average
- MIPS Final Score
- 75.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Surgical Oncology Physician) - 75.3/100 vs national avg 83.1
How MIPS and board certification work
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).
Gregory Graves, M.D. appears in the CMS NPPES registry as a Surgical Oncology Physician provider holding M.D. credentials at 3000 L ST STE 100, Sacramento, CA, 95816, with a listed phone of (916) 456-4428. NPI 1548243033 was issued on 11/29/2005.
Medicare Part D records for calendar year 2023 show 184 prescription claims written by this provider, covering 100 Medicare beneficiaries and totaling roughly $3K in drug spend, with an opioid prescribing rate of 54.3%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75.3/100 for the 2023 performance year (Quality 79.4), compared with the national average of 83.1.
Surgical Oncology Physician is a narrow specialty nationwide, with 1,410 enrolled providers across 50 states and an average of 97 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
Provider Details
| NPI | 1548243033 |
|---|---|
| Specialty | Surgical Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 11/29/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75.2739
Final Score
Avg: 83.1
79.3513
Quality
100
Promoting Interoperability
Reporting: Individual
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Gregory Graves, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$12.3K
Largest payer
AstraZeneca Pharmaceuticals LP
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Gregory Graves, M.D.. To verify Gregory Graves, M.D.'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
184
Total Claims
$3K
Total Drug Cost
100
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 206
- Total Day Supply
- 2,248
- Generic Drug Cost
- $2K
- Opioid Claims
- 100 (54.3% rate)
- Antibiotic Claims
- 28
Patient Demographics
- Average Patient Age
- 73.9 years
- Avg HCC Risk Score
- 1.22
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gregory Graves, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
74 claims
- Cephalexin 15
Cephalexin
15 claims
- Oxycodone-Acetamin… 15
Oxycodone-Acetaminophen
15 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 74 |
| Cephalexin | 15 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgical Oncology Physician Overview
How Gregory Graves, M.D. fits within the Surgical Oncology Physician landscape nationally.
1,410
Surgical Oncology Physician Providers in US
50
States with Surgical Oncology Physician
97
Avg Claims per Provider
Gregory Graves, M.D.'s 184 claims are above the specialty average of 97.
Nearby Surgical Oncology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Graves.
Dr. Rahim Aimaq
MD
Duarte, CA
Yasir Akmal
Los Angeles, CA
Dr. Mohammed Al-Temimi
MD
San Jose, CA
Dr. Farin Amersi
M.D.
West Hollywood, CA
Dr. Elizabeth Arena
M.D.
Los Angeles, CA
Compare Surgical 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 Surgical 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.
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Frequently Asked Questions
What is Gregory Graves, M.D.'s specialty? ▼
Gregory Graves, M.D. specializes in Surgical Oncology Physician and practices in Sacramento, California. Credentials: M.D..
How much does Gregory Graves, M.D. prescribe under Medicare Part D? ▼
In 2023, Gregory Graves, M.D. wrote 184 Medicare Part D claims totaling $3K in drug costs for 100 beneficiaries.
What is Gregory Graves, M.D.'s Medicare quality score? ▼
Gregory Graves, M.D. has a CMS MIPS Final Score of 75.3/100 (Quality: 79.4). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Gregory Graves, M.D. located? ▼
Gregory Graves, M.D. is located at 3000 L ST STE 100, Sacramento, CA, 95816. Phone: (916) 456-4428.
What is Gregory Graves, M.D.'s NPI number? ▼
Gregory Graves, M.D.'s National Provider Identifier (NPI) is 1548243033, issued on 11/29/2005.
Does Gregory Graves, M.D. prescribe opioids? ▼
Yes, Gregory Graves, M.D. had 100 opioid claims in 2023 with an opioid prescribing rate of 54.3%.
How many Surgical Oncology Physician providers are there in the US? ▼
There are 1,410 Surgical Oncology Physician providers across 50 states in the US. The average Surgical Oncology Physician provider writes 97 Medicare Part D claims per year.
What drugs does Gregory Graves, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Graves, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Cephalexin, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Graves, M.D. accept Medicare? ▼
Gregory Graves, M.D. appears in CMS Medicare data with 184 Part D claims and 100 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Graves, M.D.'s credentials? ▼
Gregory Graves, M.D.'s NPI is 1548243033 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
View source datasets and methodology notes
- 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.