NPI registry status
Active
2026 NPPES data Adult Medicine Physician NPI 1316574452 D.O.
Verify on CMS → Constantine Kulkoff, D.O.
Adult Medicine Physician in Salinas, 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 2,481 in Adult 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
607
Medicare Part D claims · 196 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Constantine Kulkoff, D.O. filed 607 Medicare Part D claims in 2023 as an Adult Medicine Physician in Salinas, California, prescribing 94% generic.
- 607
- Part D claims, 2023
- 94%
- generic prescribing
- ≥69th
- pct by Part D claim volume (lower-bound band)
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.
Constantine Kulkoff, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
607 ≥ 69th percentile 69% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Constantine Kulkoff, D.O. 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 Constantine Kulkoff, D.O.?
Quality data not reportedPrimary specialty
Adult Medicine Physician
Medicare Part D claims
607 78% vs specialty avg
Specialty distribution in California
How Adult Medicine 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 Adult Medicine 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).
Constantine Kulkoff, D.O. appears in the CMS NPPES registry as an Adult Medicine Physician provider holding D.O. credentials at 21 SAN MIGUEL AVE STE A, Salinas, CA, 93901, with a listed phone of (831) 256-7673. NPI 1316574452 was issued on 03/26/2020.
Medicare Part D records for calendar year 2023 show 607 prescription claims written by this provider, covering 196 Medicare beneficiaries and totaling roughly $25K in drug spend, split 6% brand-name and 94% generic by claim count.
Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 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 | 1316574452 |
|---|---|
| Specialty | Adult Medicine Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 03/26/2020 |
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 Constantine Kulkoff, D.O.. To verify Constantine Kulkoff, D.O.'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 · Generic-heavy
Constantine Kulkoff, D.O. - brand share 6.0%
Adult Medicine Physician average
6% brand-name claims vs 94% generic, on 607 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.
607
Total Claims
$25K
Total Drug Cost
196
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,426
- Total Day Supply
- 41,833
- Brand vs Generic
- 6% brand / 94% generic
- Brand Drug Cost
- $16K
- Generic Drug Cost
- $9K
- Antibiotic Claims
- 11
Patient Demographics
- Average Patient Age
- 75.4 years
- Avg HCC Risk Score
- 1.26
- Gender Split
- 52% female / 48% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Constantine Kulkoff, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Lisinopril
Lisinopril
43 claims
- Atorvastatin Calcium
Atorvastatin Calcium
41 claims
- Amlodipine Besylate
Amlodipine Besylate
39 claims
- Lisinopril-Hydroch…
Lisinopril-Hydrochlorothiazide
36 claims
- Losartan Potassium
Losartan Potassium
21 claims
- Levothyroxine Sodium
Levothyroxine Sodium
20 claims
- Trazodone Hcl
Trazodone Hcl
18 claims
- Fluticasone Propio… 17
Fluticasone Propionate
17 claims
| Drug | Claims |
|---|---|
| Lisinopril | 43 |
| Atorvastatin Calcium | 41 |
| Amlodipine Besylate | 39 |
| Lisinopril-Hydrochlorothiazide Lisinopril/Hydrochlorothiazide | 36 |
| Losartan Potassium | 21 |
| Levothyroxine Sodium | 20 |
| Trazodone Hcl | 18 |
| Fluticasone Propionate | 17 |
| Tamsulosin Hcl | 16 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Adult Medicine Physician Overview
How Constantine Kulkoff, D.O. fits within the Adult Medicine Physician landscape nationally.
2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider
Constantine Kulkoff, D.O.'s 607 claims are below the specialty average of 2,807.
Nearby Adult Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Kulkoff.
Dr. Mina Abazari
M.D.
San Juan Capistrano, CA
Dr. Derrick Adams
D.O.
Lincoln, CA
Dr. Abhishek Agarwal
M.D.
Roseville, CA
Dr. Marie Agleham
MD
Union City, CA
Dr. Ahmad Ahmadzia
M.D.
Fair Oaks, CA
Compare Adult Medicine 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 Adult Medicine 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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Medical Specialties Explained
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Frequently Asked Questions
What is Constantine Kulkoff, D.O.'s specialty? ▼
Constantine Kulkoff, D.O. specializes in Adult Medicine Physician and practices in Salinas, California. Credentials: D.O..
How much does Constantine Kulkoff, D.O. prescribe under Medicare Part D? ▼
In 2023, Constantine Kulkoff, D.O. wrote 607 Medicare Part D claims totaling $25K in drug costs for 196 beneficiaries.
Where is Constantine Kulkoff, D.O. located? ▼
Constantine Kulkoff, D.O. is located at 21 SAN MIGUEL AVE STE A, Salinas, CA, 93901. Phone: (831) 256-7673.
What is Constantine Kulkoff, D.O.'s NPI number? ▼
Constantine Kulkoff, D.O.'s National Provider Identifier (NPI) is 1316574452, issued on 03/26/2020.
Does Constantine Kulkoff, D.O. prescribe more brand-name or generic drugs? ▼
Constantine Kulkoff, D.O.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $16K in brand drug costs.
How many Adult Medicine Physician providers are there in the US? ▼
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does Constantine Kulkoff, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Constantine Kulkoff, D.O.'s most frequently prescribed drugs include Lisinopril, Atorvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Constantine Kulkoff, D.O. accept Medicare? ▼
Constantine Kulkoff, D.O. appears in CMS Medicare data with 607 Part D claims and 196 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Constantine Kulkoff, D.O.'s credentials? ▼
Constantine Kulkoff, D.O.'s NPI is 1316574452 with credentials D.O.. 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
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.