NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1639121981 MD
Verify on CMS → Hovanes Ter-Zakarian, MD
Family Medicine 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 147,760 in Family Medicine 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
39K
Medicare Part D claims · 621 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
82%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
8.8/100
▼ 75 pts below national avg 83.5 · Penalty band
Industry payments
$2.0K
80 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Hovanes Ter-Zakarian, MD reported a CMS MIPS final score of 8.8/100 - below the 83.5 national average - and filed 39,065 Medicare Part D claims in 2023.
- 8.8/100
- MIPS score · -75 vs avg
- 39K
- Part D claims, 2023
- 82%
- 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.
Federal trust snapshot
What official records show about Hovanes Ter-Zakarian, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1639121981), first enumerated 05/16/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 39,065 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 8.8/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$2.0K in reported industry payments (80 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Hovanes Ter-Zakarian, MD's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1639121981 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-LOW · RX-HEAVY · BOOK-MID · PHOTO-FINISH
- NPI-10 1639121981
- ENUM-LEGACY 2006
- TAX-MEGA 148K Family Medicine
- MIPS-LOW 8.8/100
- RX-HEAVY 39K claims
- BOOK-MID 15,933 in California
- PHOTO-FINISH David Ware · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- H Fred Martin · …
H Fred Martin
8.7 MIPS pts
- Ter-Zakarian · t…
Ter-Zakarian · this provider
8.8 MIPS pts
- David Ware · near
David Ware
8.8 MIPS pts
- James Campbell ·…
James Campbell
8.8 MIPS pts
- David Ho · highest
David Ho
8.9 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Hovanes Ter-Zakarian, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
9 ≥ 2nd percentile 2% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Hovanes Ter-Zakarian, MD sits
This provider among family medicine physician peers
Across the 21,266 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Hovanes Ter-Zakarian, MD writes more Part D claims than 100% of them and scores higher on MIPS quality than 1% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Hovanes Ter-Zakarian, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Hovanes Ter-Zakarian, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Hovanes Ter-Zakarian, MD?
Below national averagePrimary specialty
Family Medicine Physician
Medicare Part D claims
39,065 11× vs specialty avg
MIPS final score
8.8/100 74.7 pts vs avg
Specialty distribution in California
How Family Medicine Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Hovanes Ter-Zakarian, MD's 2023 MIPS final score plotted against the Family Medicine Physician national average
- MIPS Final Score
- 8.8/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1639121981 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/16/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
8.7909
Final Score
Measured-score avg: 83.5
0
Quality
29.303
Cost
Reporting: Individual
Hospital and facility affiliations
Facilities where Hovanes Ter-Zakarian, 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.
Comprehensive Community Health Centers Inc
N Hollywood, 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).
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 Hovanes Ter-Zakarian, MD. Source: openpaymentsdata.cms.gov.
Total received
$2.0K
Largest payer
Amgen 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 Hovanes Ter-Zakarian, MD. To verify Hovanes Ter-Zakarian, 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
Hovanes Ter-Zakarian, MD - brand share 16.0%
Family Medicine Physician average
16% brand-name claims vs 82% generic, on 39,065 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.
39,065
Total Claims
$6.1M
Total Drug Cost
621
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 41,131
- Total Day Supply
- 1,187,270
- Brand vs Generic
- 16% brand / 82% generic
- Brand Drug Cost
- $3.3M
- Generic Drug Cost
- $2.7M
- Opioid Claims
- 723 (1.9% rate)
- Antibiotic Claims
- 456
Patient Demographics
- Average Patient Age
- 73.6 years
- Avg HCC Risk Score
- 1.44
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 47, 65-74: 306, 75-84: 200, 85+: 68
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Hovanes Ter-Zakarian, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
1,376 claims
- Diclofenac Sodium
Diclofenac Sodium
1,054 claims
- Amlodipine Besylate
Amlodipine Besylate
1,016 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
949 claims
- Ibuprofen
Ibuprofen
910 claims
- Vascepa
Vascepa
858 claims
- Metoprolol Succinate
Metoprolol Succinate
850 claims
- Metformin Hcl
Metformin Hcl
803 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 1,376 |
| Diclofenac Sodium | 1,054 |
| Amlodipine Besylate | 1,016 |
| Rosuvastatin Calcium | 949 |
| Ibuprofen | 910 |
| Vascepa Icosapent Ethyl | 858 |
| Metoprolol Succinate | 850 |
| Metformin Hcl | 803 |
| Clonidine Hcl | 762 |
| Omeprazole | 756 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Hovanes Ter-Zakarian, MD fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Hovanes Ter-Zakarian, MD's 39,065 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Ter-Zakarian, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (8.8 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Ter-Zakarian.
One of 15,933 Family Medicine Physician providers enrolled in California, 5 are shown here.
Dr. Omer Aba-Omer
MD
Santa Monica, CA
Dr. Michelle Ababa
MD
Wilmington, CA
Dr. Anna Tzeitel Abalos
MD
Roseville, CA
Dr. Adan Abarca
MD
Anaheim, CA
Dr. Lorraine Abate
M.D.
Sacramento, CA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Hovanes Ter-Zakarian, MD's specialty? ▼
Hovanes Ter-Zakarian, MD specializes in Family Medicine Physician and practices in Los Angeles, California. Credentials: MD.
How much does Hovanes Ter-Zakarian, MD prescribe under Medicare Part D? ▼
In 2023, Hovanes Ter-Zakarian, MD wrote 39,065 Medicare Part D claims totaling $6.1M in drug costs for 621 beneficiaries.
What is Hovanes Ter-Zakarian, MD's Medicare quality score? ▼
Hovanes Ter-Zakarian, MD has a CMS MIPS Final Score of 8.8/100 (Quality: 0, Cost: 29.3). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Hovanes Ter-Zakarian, MD located? ▼
Hovanes Ter-Zakarian, MD is located at 5250 SANTA MONICA BLVD STE 310, Los Angeles, CA, 90029. Phone: (323) 663-9831.
What is Hovanes Ter-Zakarian, MD's NPI number? ▼
Hovanes Ter-Zakarian, MD's National Provider Identifier (NPI) is 1639121981, issued on 05/16/2006.
Does Hovanes Ter-Zakarian, MD prescribe more brand-name or generic drugs? ▼
Hovanes Ter-Zakarian, MD's prescribing is 16% brand-name and 82% generic drugs by claim count, with $3.3M in brand drug costs.
Does Hovanes Ter-Zakarian, MD prescribe opioids? ▼
Yes, Hovanes Ter-Zakarian, MD had 723 opioid claims in 2023 with an opioid prescribing rate of 1.9%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Hovanes Ter-Zakarian, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Hovanes Ter-Zakarian, MD's most frequently prescribed drugs include Atorvastatin Calcium, Diclofenac Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Hovanes Ter-Zakarian, MD accept Medicare? ▼
Hovanes Ter-Zakarian, MD appears in CMS Medicare data with 39,065 Part D claims and 621 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Hovanes Ter-Zakarian, MD's credentials? ▼
Hovanes Ter-Zakarian, MD's NPI is 1639121981 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
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.