NPI registry status
Active
2026 NPPES data Student in an Organized Health Care Education/Training Program NPI 1518222876 M.D.
Verify on CMS → Denise Ammon, M.D.
Student in an Organized Health Care Education/Training Program in Stockton, 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
131
Medicare Part D claims · 90 beneficiaries · Student in an Organized Health Care Education/Training Program avg: 459
MIPS score
73.9/100
▼ 10 pts below national avg 83.5 · Mid-tier
What the federal data shows
Denise Ammon, M.D. reported a CMS MIPS final score of 73.9/100 - below the 83.5 national average - and filed 131 Medicare Part D claims in 2023.
- 73.9/100
- MIPS score · -10 vs avg
- 131
- Part D claims, 2023
- ≥11th
- pct among measured MIPS (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 1518222876 · Student in an Organized Health Care Education/Training Program
NPI-10 · ENUM-MID · TAX-MEGA · MIPS-BELOW · RX-LIGHT · BOOK-MID · PHOTO-FINISH
- NPI-10 1518222876
- ENUM-MID 2012
- TAX-MEGA 331K Student in
- MIPS-BELOW 73.9/100
- RX-LIGHT 131
- BOOK-MID 46,496 in California
- PHOTO-FINISH David Warner · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Jessica Atkins ·…
Jessica Atkins
73.8 MIPS pts
- Lauren Boudreaux…
Lauren Boudreaux
73.8 MIPS pts
- Ammon · this pro…
Ammon · this provider
73.9 MIPS pts
- David Warner · h…
David Warner
73.9 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Denise Ammon, 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.
74 ≥ 11th percentile 11% 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 Denise Ammon, M.D. sits
This provider among student in an organized health care education/training program peers
Across the 12,177 student in an organized health care education/training program providers who report both Medicare Part D prescribing and a MIPS quality score, Denise Ammon, M.D. writes more Part D claims than 32% of them and scores higher on MIPS quality than 9% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one student in an organized health care education/training program peer from a representative sample of 60; the gold marker is Denise Ammon, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Denise Ammon, M.D.?
Below national averagePrimary specialty
Student in an Organized Health Care Education/Training Program
Medicare Part D claims
131 71% vs specialty avg
MIPS final score
73.9/100 9.6 pts vs avg
Specialty distribution in California
How Student in an Organized Health Care Education/Training Program compares to other specialties among California providers
Medicare quality performance, MIPS
Denise Ammon, M.D.'s 2023 MIPS final score plotted against the Student in an Organized Health Care Education/Training Program national average
- MIPS Final Score
- 73.9/100
- 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 | 1518222876 |
|---|---|
| Specialty | Student in an Organized Health Care Education/Training Program |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 07/11/2012 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.9041
Final Score
Measured-score avg: 83.5
62.9812
Quality
47.5481
Cost
Reporting: Individual
Hospital and facility affiliations
Facilities where Denise Ammon, 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.
Cep America - California
Concord, CA
San Francisco Physicians International Medical Group Inc
Stockton, 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 Denise Ammon, M.D.. To verify Denise Ammon, 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.
131
Total Claims
$2K
Total Drug Cost
90
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 131
- Total Day Supply
- 1,015
- Generic Drug Cost
- $2K
- Opioid Claims
- 11 (8.4% rate)
- Antibiotic Claims
- 50
Patient Demographics
- Average Patient Age
- 70.3 years
- Avg HCC Risk Score
- 2.03
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 22, 65-74: 32, 75-84: 25, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Denise Ammon, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Dicyclomine Hcl
Dicyclomine Hcl
16 claims
- Cephalexin
Cephalexin
13 claims
- Ibuprofen
Ibuprofen
13 claims
- Ondansetron Odt
Ondansetron Odt
12 claims
- Cefpodoxime Proxetil
Cefpodoxime Proxetil
11 claims
| Drug | Claims |
|---|---|
| Dicyclomine Hcl | 16 |
| Cephalexin | 13 |
| Ibuprofen | 13 |
| Ondansetron Odt Ondansetron | 12 |
| Cefpodoxime Proxetil | 11 |
* 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 Denise Ammon, M.D. 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
Denise Ammon, M.D.'s 131 claims are below 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 Ammon, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (73.9 here).
Same NPPES enumeration year (2012)
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 Ammon.
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 Denise Ammon, M.D.'s specialty? ▼
Denise Ammon, M.D. specializes in Student in an Organized Health Care Education/Training Program and practices in Stockton, California. Credentials: M.D..
How much does Denise Ammon, M.D. prescribe under Medicare Part D? ▼
In 2023, Denise Ammon, M.D. wrote 131 Medicare Part D claims totaling $2K in drug costs for 90 beneficiaries.
What is Denise Ammon, M.D.'s Medicare quality score? ▼
Denise Ammon, M.D. has a CMS MIPS Final Score of 73.9/100 (Quality: 63, Cost: 47.5). 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 Denise Ammon, M.D. located? ▼
Denise Ammon, M.D. is located at 1800 N CALIFORNIA ST, Stockton, CA, 95204. Phone: (209) 972-9000.
What is Denise Ammon, M.D.'s NPI number? ▼
Denise Ammon, M.D.'s National Provider Identifier (NPI) is 1518222876, issued on 07/11/2012.
Does Denise Ammon, M.D. prescribe opioids? ▼
Yes, Denise Ammon, M.D. had 11 opioid claims in 2023 with an opioid prescribing rate of 8.4%.
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 Denise Ammon, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Denise Ammon, M.D.'s most frequently prescribed drugs include Dicyclomine Hcl, Cephalexin, Ibuprofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Denise Ammon, M.D. accept Medicare? ▼
Denise Ammon, M.D. appears in CMS Medicare data with 131 Part D claims and 90 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Denise Ammon, M.D.'s credentials? ▼
Denise Ammon, M.D.'s NPI is 1518222876 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.