NPI registry status
Active
2026 NPPES data Sleep Medicine (Internal Medicine) Physician NPI 1922058437 M.D.
Verify on CMS → John Koostra, M.D.
Sleep Medicine (Internal Medicine) Physician in Monterey, 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 932 in Sleep Medicine (Internal 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
3K
Medicare Part D claims · 474 beneficiaries · Sleep Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
43%
generic claims · 57% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
84/100
▲ 1 pts above national avg 83.5 · Above neutral
Industry payments
$2.9K
102 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
John Koostra, M.D. reported a CMS MIPS final score of 84/100 - above the 83.5 national average - and filed 2,803 Medicare Part D claims in 2024.
- 84/100
- MIPS score · +1 vs avg
- 3K
- Part D claims, 2024
- 43%
- 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 John Koostra, M.D.
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 1922058437), first enumerated 05/12/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 2,803 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 84/100 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
$2.9K in reported industry payments (102 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 John Koostra, M.D.'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 1922058437 · Sleep Medicine (Internal Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-INLINE · RX-MID · BOOK-THIN · PHOTO-FINISH
- NPI-10 1922058437
- ENUM-LEGACY 2006
- TAX-NARROW 932
- MIPS-INLINE 84/100
- RX-MID 2,803
- BOOK-THIN 102 in California
- PHOTO-FINISH Babar Hassan, MD · ±0.1
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Anne Magauran, M…
Anne Magauran, M.D.
83.6 MIPS pts
- Donald Bedsole, …
Donald Bedsole, MD
83.7 MIPS pts
- Christina Rigas,…
Christina Rigas, MD
83.9 MIPS pts
- Koostra · this p…
Koostra · this provider
84 MIPS pts
- Babar Hassan, MD…
Babar Hassan, MD
84.1 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
John Koostra, M.D.'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.
84 ≥ 42nd percentile 42% 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 John Koostra, M.D. sits
This provider among sleep medicine (internal medicine) physician peers
Across the 274 sleep medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, John Koostra, M.D. writes more Part D claims than 85% of them and scores higher on MIPS quality than 39% - 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 sleep medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is John Koostra, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
John Koostra, M.D. 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 John Koostra, M.D.?
Near national averagePrimary specialty
Sleep Medicine (Internal Medicine) Physician
Medicare Part D claims
2,803 118% vs specialty avg
MIPS final score
84/100 0.5 pts vs avg
Specialty distribution in California
How Sleep Medicine (Internal Medicine) Physician compares to other specialties among California providers
Medicare quality performance, MIPS
John Koostra, M.D.'s 2023 MIPS final score plotted against the Sleep Medicine (Internal Medicine) Physician national average
- MIPS Final Score
- 84/100
- 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 | 1922058437 |
|---|---|
| Specialty | Sleep Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/12/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
84.006
Final Score
Measured-score avg: 83.5
83.0673
Quality
63.6195
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where John Koostra, M.D. 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.
County OF Monterey
Salinas, 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 John Koostra, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$2.9K
Largest payer
Mylan Specialty L.P.
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 John Koostra, M.D.. To verify John Koostra, 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 · Brand-heavy
John Koostra, M.D. - brand share 57.0%
Sleep Medicine (Internal Medicine) Physician average
57% brand-name claims vs 43% generic, on 2,803 2024 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 2024.
2,803
Total Claims
$1.3M
Total Drug Cost
474
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,448.6
- Total Day Supply
- 121,747
- Brand vs Generic
- 57% brand / 43% generic
- Brand Drug Cost
- $1.3M
- Generic Drug Cost
- $37K
- Antibiotic Claims
- 263
Patient Demographics
- Average Patient Age
- 76.3 years
- Avg HCC Risk Score
- 1.68
- Gender Split
- 64% female / 36% male
- Age Distribution
- <65: 16, 65-74: 166, 75-84: 233, 85+: 59
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What John Koostra, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Trelegy Ellipta
Trelegy Ellipta
382 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
363 claims
- Montelukast Sodium
Montelukast Sodium
216 claims
- Spiriva Respimat
Spiriva Respimat
159 claims
- Prednisone 133
Prednisone
133 claims
- Doxycycline Hyclate 119
Doxycycline Hyclate
119 claims
- Ventolin Hfa 107
Ventolin Hfa
107 claims
- Breztri Aerosphere 92
Breztri Aerosphere
92 claims
| Drug | Claims |
|---|---|
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 382 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 363 |
| Montelukast Sodium | 216 |
| Spiriva Respimat Tiotropium Bromide | 159 |
| Prednisone | 133 |
| Doxycycline Hyclate | 119 |
| Ventolin Hfa Albuterol Sulfate | 107 |
| Breztri Aerosphere Budesonide/Glycopyr/Formoterol | 92 |
| Anoro Ellipta Umeclidinium Brm/Vilanterol Tr | 72 |
| Stiolto Respimat Tiotropium Br/Olodaterol Hcl | 70 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Sleep Medicine (Internal Medicine) Physician in CA →
All providers in California →
Compare specialties →
Sleep Medicine (Internal Medicine) Physician Overview
How John Koostra, M.D. fits within the Sleep Medicine (Internal Medicine) Physician landscape nationally.
932
Sleep Medicine (Internal Medicine) Physician Providers in US
52
States with Sleep Medicine (Internal Medicine) Physician
1,288
Avg Claims per Provider
John Koostra, M.D.'s 2,803 claims are above the specialty average of 1,288.
Nationwide Sleep Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Koostra, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (84 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Sleep Medicine (Internal Medicine) Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Koostra.
One of 102 Sleep Medicine (Internal Medicine) Physician providers enrolled in California, 5 are shown here.
Dr. Jennifer Acostamadiedo
MD
Santa Cruz, CA
Dr. Fatima Ajaz
M.D
Orange, CA
Kathreen Al Ramo
Fresno, CA
Dr. Jacqueline Angles
D.O.
Madera, CA
Dr. Amir Arfaei
MD
Ventura, CA
Compare Sleep Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Koostra, M.D.'s specialty? ▼
John Koostra, M.D. specializes in Sleep Medicine (Internal Medicine) Physician and practices in Monterey, California. Credentials: M.D..
How much does John Koostra, M.D. prescribe under Medicare Part D? ▼
In 2024, John Koostra, M.D. wrote 2,803 Medicare Part D claims totaling $1.3M in drug costs for 474 beneficiaries.
What is John Koostra, M.D.'s Medicare quality score? ▼
John Koostra, M.D. has a CMS MIPS Final Score of 84/100 (Quality: 83.1, Cost: 63.6). 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 John Koostra, M.D. located? ▼
John Koostra, M.D. is located at 30 GARDEN CT, Monterey, CA, 93940. Phone: (831) 646-8570.
What is John Koostra, M.D.'s NPI number? ▼
John Koostra, M.D.'s National Provider Identifier (NPI) is 1922058437, issued on 05/12/2006.
Does John Koostra, M.D. prescribe more brand-name or generic drugs? ▼
John Koostra, M.D.'s prescribing is 57% brand-name and 43% generic drugs by claim count, with $1.3M in brand drug costs.
How many Sleep Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 932 Sleep Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Sleep Medicine (Internal Medicine) Physician provider writes 1,288 Medicare Part D claims per year.
What drugs does John Koostra, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, John Koostra, M.D.'s most frequently prescribed drugs include Trelegy Ellipta, Albuterol Sulfate Hfa, Montelukast Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Koostra, M.D. accept Medicare? ▼
John Koostra, M.D. appears in CMS Medicare data with 2,803 Part D claims and 474 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Koostra, M.D.'s credentials? ▼
John Koostra, M.D.'s NPI is 1922058437 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.