NPI registry status
Active
2026 NPPES data Student in an Organized Health Care Education/Training Program NPI 1861716805 D.O.
Verify on CMS → Shirley Koon, D.O.
Student in an Organized Health Care Education/Training Program in Sacramento, 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 331,274 in Student in an Organized Health Care Education/Training Program, 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
5K
Medicare Part D claims · 471 beneficiaries · Student in an Organized Health Care Education/Training Program avg: 459
Generic prescribing
88%
generic claims · 12% 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
Shirley Koon, D.O. filed 5,131 Medicare Part D claims in 2023 as a Student in an Organized Health Care Education/Training Program in Sacramento, California, prescribing 88% generic.
- 5K
- Part D claims, 2023
- 88%
- generic prescribing
- ≥94th
- 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.
CMS NPPES provider registry desk
NPI 1861716805 · Student in an Organized Health Care Education/Training Program
NPI-10 · ENUM-MID · TAX-MEGA · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1861716805
- ENUM-MID 2010
- TAX-MEGA 331K Student in
- RX-MID 5,131
- BOOK-MID 46,496 in California
- PHOTO-ENUM Jonathan Nguyen · 2010
Shirley Koon, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
5,131 ≥ 94th percentile 94% 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
What does the federal data show about Shirley Koon, D.O.?
Quality data not reportedPrimary specialty
Student in an Organized Health Care Education/Training Program
Medicare Part D claims
5,131 11× vs specialty avg
Specialty distribution in California
How Student in an Organized Health Care Education/Training Program 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 Student in an Organized Health Care Education/Training Program. 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).
Practice Address
Provider Details
| NPI | 1861716805 |
|---|---|
| Specialty | Student in an Organized Health Care Education/Training Program |
| Credentials | D.O. |
| Gender | Female |
| NPI Issued | 03/19/2010 |
Hospital and facility affiliations
Facilities where Shirley Koon, D.O. 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.
Sutter Valley Medical Foundation
Sacramento, 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).
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 Shirley Koon, D.O.. To verify Shirley Koon, 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 · Typical
Shirley Koon, D.O. - brand share 12.0%
Student in an Organized Health Care Education/Training Program average
12% brand-name claims vs 88% generic, on 5,131 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.
5,131
Total Claims
$532K
Total Drug Cost
471
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 11,658
- Total Day Supply
- 338,824
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $387K
- Generic Drug Cost
- $143K
- Opioid Claims
- 317 (6.2% rate)
- Antibiotic Claims
- 91
Patient Demographics
- Average Patient Age
- 75.5 years
- Avg HCC Risk Score
- 1.05
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 24, 65-74: 214, 75-84: 153, 85+: 80
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Shirley Koon, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Losartan Potassium
Losartan Potassium
279 claims
- Levothyroxine Sodium
Levothyroxine Sodium
225 claims
- Atorvastatin Calcium
Atorvastatin Calcium
221 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
195 claims
- Amlodipine Besylate
Amlodipine Besylate
190 claims
- Lisinopril
Lisinopril
173 claims
- Gabapentin
Gabapentin
155 claims
- Simvastatin
Simvastatin
114 claims
| Drug | Claims |
|---|---|
| Losartan Potassium | 279 |
| Levothyroxine Sodium | 225 |
| Atorvastatin Calcium | 221 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 195 |
| Amlodipine Besylate | 190 |
| Lisinopril | 173 |
| Gabapentin | 155 |
| Simvastatin | 114 |
| Pravastatin Sodium | 106 |
| Duloxetine Hcl | 94 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Student in an Organized Health Care Education/Training Program in CA →
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Student in an Organized Health Care Education/Training Program Overview
How Shirley Koon, D.O. fits within the Student in an Organized Health Care Education/Training Program landscape nationally.
331,274
Student in an Organized Health Care Education/Training Program Providers in US
55
States with Student in an Organized Health Care Education/Training Program
459
Avg Claims per Provider
Shirley Koon, D.O.'s 5,131 claims are above the specialty average of 459.
Nationwide Student in an Organized Health Care Education/Training Program peers with similar MIPS or enrollment year
Two federal-record peer sets for Koon, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2010)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Student in an Organized Health Care Education/Training Program Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Koon.
One of 46,496 Student in an Organized Health Care Education/Training Program providers enrolled in California, 5 are shown here.
Frequently Asked Questions
What is Shirley Koon, D.O.'s specialty? ▼
Shirley Koon, D.O. specializes in Student in an Organized Health Care Education/Training Program and practices in Sacramento, California. Credentials: D.O..
How much does Shirley Koon, D.O. prescribe under Medicare Part D? ▼
In 2023, Shirley Koon, D.O. wrote 5,131 Medicare Part D claims totaling $532K in drug costs for 471 beneficiaries.
Where is Shirley Koon, D.O. located? ▼
Shirley Koon, D.O. is located at 1201 ALHAMBRA BLVD, Sacramento, CA, 95816. Phone: (916) 731-7925.
What is Shirley Koon, D.O.'s NPI number? ▼
Shirley Koon, D.O.'s National Provider Identifier (NPI) is 1861716805, issued on 03/19/2010.
Does Shirley Koon, D.O. prescribe more brand-name or generic drugs? ▼
Shirley Koon, D.O.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $387K in brand drug costs.
Does Shirley Koon, D.O. prescribe opioids? ▼
Yes, Shirley Koon, D.O. had 317 opioid claims in 2023 with an opioid prescribing rate of 6.2%.
How many Student in an Organized Health Care Education/Training Program providers are there in the US? ▼
There are 331,274 Student in an Organized Health Care Education/Training Program providers across 55 states in the US. The average Student in an Organized Health Care Education/Training Program provider writes 459 Medicare Part D claims per year.
What drugs does Shirley Koon, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Shirley Koon, D.O.'s most frequently prescribed drugs include Losartan Potassium, Levothyroxine Sodium, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Shirley Koon, D.O. accept Medicare? ▼
Shirley Koon, D.O. appears in CMS Medicare data with 5,131 Part D claims and 471 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Shirley Koon, D.O.'s credentials? ▼
Shirley Koon, D.O.'s NPI is 1861716805 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.