NPI registry status
Active
2026 NPPES data General Practice Physician NPI 1891743910 MD, MS, MPH
Verify on CMS → Chadwick Donaldson, MD, MS, MPH
General Practice Physician in Camp Pendleton, 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 16,725 in General Practice 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
515
Medicare Part D claims · 183 beneficiaries · General Practice Physician avg: 3K
Industry payments
$2.6K
37 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Chadwick Donaldson, MD, MS, MPH filed 515 Medicare Part D claims in 2023 as a General Practice Physician in Camp Pendleton, California.
- 515
- Part D claims, 2023
- 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.
Chadwick Donaldson, MD, MS, MPH's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
515 Top 34% higher than 66% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Chadwick Donaldson, MD, MS, MPH practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations - 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 Chadwick Donaldson, MD, MS, MPH?
Quality data not reportedPrimary specialty
General Practice Physician
Medicare Part D claims
515 82% vs specialty avg
Specialty distribution in California
How General Practice 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 General Practice 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).
Chadwick Donaldson, MD, MS, MPH appears in the CMS NPPES registry as a General Practice Physician provider holding MD, MS, MPH credentials at H200 MERCY LANE, Camp Pendleton, CA, 92055, with a listed phone of (760) 725-6646. NPI 1891743910 was issued on 05/04/2006.
Medicare Part D records for calendar year 2023 show 515 prescription claims written by this provider, covering 183 Medicare beneficiaries and totaling roughly $56K in drug spend, with an opioid prescribing rate of 8.9%.
General Practice Physician is a mid-sized specialty nationwide, with 16,725 enrolled providers across 56 states and an average of 2,872 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 | 1891743910 |
|---|---|
| Specialty | General Practice Physician |
| Credentials | MD, MS, MPH |
| Gender | Male |
| NPI Issued | 05/04/2006 |
Hospital and facility affiliations
Facilities where Chadwick Donaldson, MD, MS, MPH 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.
According to CMS billing records, Chadwick Donaldson, MD, MS, MPH is affiliated with 3 Medicare-billing facilities.
Emergency And Acute Care Medical Corporation
San Diego, CA
Hillcrest Ear Nose And Throat Inc
San Diego, CA
ON Call Specialists Medical Group OF San Diego Inc
Chula Vista, 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 Chadwick Donaldson, MD, MS, MPH. Source: openpaymentsdata.cms.gov.
Total received
$2.6K
Largest payer
Inspire Medical Systems, 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 Chadwick Donaldson, MD, MS, MPH. To verify Chadwick Donaldson, MD, MS, MPH'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.
515
Total Claims
$56K
Total Drug Cost
183
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 597
- Total Day Supply
- 11,439
- Generic Drug Cost
- $12K
- Opioid Claims
- 46 (8.9% rate)
- Antibiotic Claims
- 107
Patient Demographics
- Average Patient Age
- 73.9 years
- Avg HCC Risk Score
- 1.42
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 16, 65-74: 86, 75-84: 64, 85+: 17
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Chadwick Donaldson, MD, MS, MPH prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
61 claims
- Omeprazole
Omeprazole
55 claims
- Prednisone
Prednisone
47 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
43 claims
- Ipratropium Bromide
Ipratropium Bromide
30 claims
- Promethazine Hcl
Promethazine Hcl
27 claims
- Fluticasone Propio… 21
Fluticasone Propionate
21 claims
- Ciprofloxacin-Dexa… 20
Ciprofloxacin-Dexamethasone
20 claims
| Drug | Claims |
|---|---|
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 61 |
| Omeprazole | 55 |
| Prednisone | 47 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 43 |
| Ipratropium Bromide | 30 |
| Promethazine Hcl | 27 |
| Fluticasone Propionate | 21 |
| Ciprofloxacin-Dexamethasone Ciprofloxacin Hcl/Dexameth | 20 |
| Ofloxacin | 14 |
| Ibuprofen | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
General Practice Physician Overview
How Chadwick Donaldson, MD, MS, MPH fits within the General Practice Physician landscape nationally.
16,725
General Practice Physician Providers in US
56
States with General Practice Physician
2,872
Avg Claims per Provider
Chadwick Donaldson, MD, MS, MPH's 515 claims are below the specialty average of 2,872.
Nearby General Practice Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Donaldson.
Dr. Dalal Aago
MD
El Cajon, CA
Dr. Hessam Aazami
M.D.
Canoga Park, CA
Dr. Kenric Aban
M.D.
Oceanside, CA
Dr. Tahira Abbasi
MD
La Jolla, CA
Dr. Ryan Abbott
M.D.
Los Angeles, CA
Compare General Practice 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 General Practice 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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Frequently Asked Questions
What is Chadwick Donaldson, MD, MS, MPH's specialty? ▼
Chadwick Donaldson, MD, MS, MPH specializes in General Practice Physician and practices in Camp Pendleton, California. Credentials: MD, MS, MPH.
How much does Chadwick Donaldson, MD, MS, MPH prescribe under Medicare Part D? ▼
In 2023, Chadwick Donaldson, MD, MS, MPH wrote 515 Medicare Part D claims totaling $56K in drug costs for 183 beneficiaries.
Where is Chadwick Donaldson, MD, MS, MPH located? ▼
Chadwick Donaldson, MD, MS, MPH is located at H200 MERCY LANE, Camp Pendleton, CA, 92055. Phone: (760) 725-6646.
What is Chadwick Donaldson, MD, MS, MPH's NPI number? ▼
Chadwick Donaldson, MD, MS, MPH's National Provider Identifier (NPI) is 1891743910, issued on 05/04/2006.
Does Chadwick Donaldson, MD, MS, MPH prescribe opioids? ▼
Yes, Chadwick Donaldson, MD, MS, MPH had 46 opioid claims in 2023 with an opioid prescribing rate of 8.9%.
How many General Practice Physician providers are there in the US? ▼
There are 16,725 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,872 Medicare Part D claims per year.
What drugs does Chadwick Donaldson, MD, MS, MPH prescribe most often? ▼
Based on 2023 Medicare Part D data, Chadwick Donaldson, MD, MS, MPH's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Omeprazole, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Chadwick Donaldson, MD, MS, MPH accept Medicare? ▼
Chadwick Donaldson, MD, MS, MPH appears in CMS Medicare data with 515 Part D claims and 183 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Chadwick Donaldson, MD, MS, MPH's credentials? ▼
Chadwick Donaldson, MD, MS, MPH's NPI is 1891743910 with credentials MD, MS, MPH. 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
Compiled from official public sources by the PlainDoctor editorial team.
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.