NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1194784785 M.D.
Verify on CMS → Merry Tetef, M.D.
Hematology & Oncology Physician in Laguna Hills, 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
311
Medicare Part D claims · 126 beneficiaries · Hematology & Oncology Physician avg: 847
MIPS score
86.1/100
▲ 3 pts above national avg 83.1 · Above neutral
What the federal data shows
Merry Tetef, M.D. reported a CMS MIPS final score of 86.1/100 - above the 83.1 national average - and filed 311 Medicare Part D claims in 2023.
- 86.1/100
- MIPS score · +3 vs avg
- 311
- 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.
Merry Tetef, 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
86 Top 48% higher than 52% 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 Merry Tetef, M.D. sits
This provider among hematology & oncology physician peers
Across the 4,233 hematology & oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Merry Tetef, M.D. writes more Part D claims than 24% of them and scores higher on MIPS quality than 49% - placing this provider in the lower-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 hematology & oncology physician peer from a representative sample of 60; the gold marker is Merry Tetef, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Merry Tetef, 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 Merry Tetef, M.D.?
High performer (top quartile)Primary specialty
Hematology & Oncology Physician
Medicare Part D claims
311 63% vs specialty avg
MIPS final score
86.1/100 3 pts vs avg
Specialty distribution in California
How Hematology & Oncology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Merry Tetef, M.D.'s 2023 MIPS final score plotted against the Hematology & Oncology Physician national average
- MIPS Final Score
- 86.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hematology & Oncology Physician) - 86.1/100 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).
Merry Tetef, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 24302 PASEO DE VALENCIA STE 200, Laguna Hills, CA, 92653, with a listed phone of (949) 458-8252. NPI 1194784785 was issued on 03/21/2006.
Medicare Part D records for calendar year 2023 show 311 prescription claims written by this provider, covering 126 Medicare beneficiaries and totaling roughly $713K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 86.1/100 for the 2023 performance year (Quality 82.9, Cost 66.7), compared with the national average of 83.1.
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 | 1194784785 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 03/21/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
86.1025
Final Score
Avg: 83.1
82.938
Quality
66.7384
Cost
100
Promoting Interoperability
Reporting: Group practice
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 Merry Tetef, M.D.. To verify Merry Tetef, 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.
311
Total Claims
$713K
Total Drug Cost
126
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 629
- Total Day Supply
- 17,968
- Generic Drug Cost
- $33K
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 1.65
- Gender Split
- 100% female / 0% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Merry Tetef, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
94 claims
- Tamoxifen Citrate
Tamoxifen Citrate
39 claims
- Letrozole
Letrozole
38 claims
- Ibrance 35
Ibrance
35 claims
- Escitalopram Oxalate 12
Escitalopram Oxalate
12 claims
- Exemestane 11
Exemestane
11 claims
| Drug | Claims |
|---|---|
| Anastrozole | 94 |
| Tamoxifen Citrate | 39 |
| Letrozole | 38 |
| Ibrance Palbociclib | 35 |
| Escitalopram Oxalate | 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 Merry Tetef, 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
Merry Tetef, M.D.'s 311 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 Tetef.
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 Merry Tetef, M.D.'s specialty? ▼
Merry Tetef, M.D. specializes in Hematology & Oncology Physician and practices in Laguna Hills, California. Credentials: M.D..
How much does Merry Tetef, M.D. prescribe under Medicare Part D? ▼
In 2023, Merry Tetef, M.D. wrote 311 Medicare Part D claims totaling $713K in drug costs for 126 beneficiaries.
What is Merry Tetef, M.D.'s Medicare quality score? ▼
Merry Tetef, M.D. has a CMS MIPS Final Score of 86.1/100 (Quality: 82.9, Cost: 66.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Merry Tetef, M.D. located? ▼
Merry Tetef, M.D. is located at 24302 PASEO DE VALENCIA STE 200, Laguna Hills, CA, 92653. Phone: (949) 458-8252.
What is Merry Tetef, M.D.'s NPI number? ▼
Merry Tetef, M.D.'s National Provider Identifier (NPI) is 1194784785, issued on 03/21/2006.
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 Merry Tetef, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Merry Tetef, M.D.'s most frequently prescribed drugs include Anastrozole, Tamoxifen Citrate, Letrozole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Merry Tetef, M.D. accept Medicare? ▼
Merry Tetef, M.D. appears in CMS Medicare data with 311 Part D claims and 126 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Merry Tetef, M.D.'s credentials? ▼
Merry Tetef, M.D.'s NPI is 1194784785 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
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.