NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1699772756 M.D.
Verify on CMS → Raymond Heung, M.D.
Hematology & Oncology Physician in San Diego, 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 11,232 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
2K
Medicare Part D claims · 101 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
78%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$65.15
3 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Raymond Heung, M.D. filed 2,338 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in San Diego, California, prescribing 78% generic.
- 2K
- Part D claims, 2023
- 78%
- generic prescribing
- $65.15
- industry payments (Sunshine Act)
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.
Raymond Heung, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,338 Top 14% higher than 86% of 1,370,886 prescribers
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)
Raymond Heung, 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 Raymond Heung, M.D.?
Quality data not reportedPrimary specialty
Hematology & Oncology Physician
Medicare Part D claims
2,338 176% vs specialty avg
Specialty distribution in California
How Hematology & Oncology Physician compares to other specialties among California 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:
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).
Raymond Heung, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 5222 BALBOA AVE, San Diego, CA, 92117, with a listed phone of (858) 874-8868. NPI 1699772756 was issued on 07/05/2005.
Medicare Part D records for calendar year 2023 show 2,338 prescription claims written by this provider, covering 101 Medicare beneficiaries and totaling roughly $609K in drug spend, split 21% brand-name and 78% generic by claim count, with an opioid prescribing rate of 1.0%.
Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,232 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
Provider Details
| NPI | 1699772756 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/05/2005 |
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 Raymond Heung, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$65
Largest payer
Eisai Inc.
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 Raymond Heung, M.D.. To verify Raymond Heung, 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.
Brand vs generic prescribing mix · Typical
Raymond Heung, M.D. - brand share 21.0%
Hematology & Oncology Physician average
21% brand-name claims vs 78% generic, on 2,338 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.
2,338
Total Claims
$609K
Total Drug Cost
101
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,504
- Total Day Supply
- 131,807
- Brand vs Generic
- 21% brand / 78% generic
- Brand Drug Cost
- $543K
- Generic Drug Cost
- $63K
- Opioid Claims
- 23 (1.0% rate)
- Antibiotic Claims
- 49
Patient Demographics
- Average Patient Age
- 78.3 years
- Avg HCC Risk Score
- 1.26
- Gender Split
- 58% female / 42% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Raymond Heung, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
180 claims
- Metformin Hcl
Metformin Hcl
116 claims
- Amlodipine Besylate
Amlodipine Besylate
85 claims
- Losartan Potassium 63
Losartan Potassium
63 claims
- Vascepa 61
Vascepa
61 claims
- Ozempic 51
Ozempic
51 claims
- Jardiance 48
Jardiance
48 claims
- Ezetimibe 46
Ezetimibe
46 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 180 |
| Metformin Hcl | 116 |
| Amlodipine Besylate | 85 |
| Losartan Potassium | 63 |
| Vascepa Icosapent Ethyl | 61 |
| Ozempic Semaglutide | 51 |
| Jardiance Empagliflozin | 48 |
| Ezetimibe | 46 |
| Gabapentin | 46 |
| Losartan-Hydrochlorothiazide Losartan/Hydrochlorothiazide | 43 |
* 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 Raymond Heung, M.D. fits within the Hematology & Oncology Physician landscape nationally.
11,232
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider
Raymond Heung, M.D.'s 2,338 claims are above 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 Heung.
Dr. Mark Abate
M.D.
Santa Barbara, CA
Dr. Iman Abdalla
MD
Los Angeles, CA
Dr. Nihal Abdulla
MD
Los Alamitos, CA
Dr. Oyewale Abidoye
M.D.
La Jolla, CA
Dr. Mohamad Adada
M.D., PHD
Roseville, CA
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.
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Frequently Asked Questions
What is Raymond Heung, M.D.'s specialty? ▼
Raymond Heung, M.D. specializes in Hematology & Oncology Physician and practices in San Diego, California. Credentials: M.D..
How much does Raymond Heung, M.D. prescribe under Medicare Part D? ▼
In 2023, Raymond Heung, M.D. wrote 2,338 Medicare Part D claims totaling $609K in drug costs for 101 beneficiaries.
Where is Raymond Heung, M.D. located? ▼
Raymond Heung, M.D. is located at 5222 BALBOA AVE, San Diego, CA, 92117. Phone: (858) 874-8868.
What is Raymond Heung, M.D.'s NPI number? ▼
Raymond Heung, M.D.'s National Provider Identifier (NPI) is 1699772756, issued on 07/05/2005.
Does Raymond Heung, M.D. prescribe more brand-name or generic drugs? ▼
Raymond Heung, M.D.'s prescribing is 21% brand-name and 78% generic drugs by claim count, with $543K in brand drug costs.
Does Raymond Heung, M.D. prescribe opioids? ▼
Yes, Raymond Heung, M.D. had 23 opioid claims in 2023 with an opioid prescribing rate of 1.0%.
How many Hematology & Oncology Physician providers are there in the US? ▼
There are 11,232 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 Raymond Heung, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Raymond Heung, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Metformin Hcl, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Raymond Heung, M.D. accept Medicare? ▼
Raymond Heung, M.D. appears in CMS Medicare data with 2,338 Part D claims and 101 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Raymond Heung, M.D.'s credentials? ▼
Raymond Heung, M.D.'s NPI is 1699772756 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.
- 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.