NPI registry status
Active
2026 NPPES data General Practice Physician NPI 1760468839 M.D.
Verify on CMS → Jonathan Greer, M.D.
General Practice Physician in Moreno Valley, 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 16,838 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
865
Medicare Part D claims · 130 beneficiaries · General Practice Physician avg: 3K
What the federal data shows
Jonathan Greer, M.D. filed 865 Medicare Part D claims in 2024 as a General Practice Physician in Moreno Valley, California.
- 865
- Part D claims, 2024
- ≥72nd
- 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.
Federal trust snapshot
What official records show about Jonathan Greer, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1760468839), first enumerated 12/20/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 865 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Jonathan Greer, 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 1760468839 · General Practice Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1760468839
- ENUM-LEGACY 2005
- TAX-MID 17K General Practice
- RX-LIGHT 865
- BOOK-LIGHT 1,869 in California
- PHOTO-ENUM Cary Gross, MD · 2005
Jonathan Greer, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
865 ≥ 72nd percentile 72% of 1,416,883 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 · 2024
◑
Board-eligible specialty (heuristic, not verified)
Jonathan Greer, M.D. 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 Jonathan Greer, M.D.?
Quality data not reportedPrimary specialty
General Practice Physician
Medicare Part D claims
865 71% 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).
Practice Address
Provider Details
| NPI | 1760468839 |
|---|---|
| Specialty | General Practice Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 12/20/2005 |
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 Jonathan Greer, M.D.. To verify Jonathan Greer, 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 2024.
865
Total Claims
$38K
Total Drug Cost
130
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,368.867
- Total Day Supply
- 35,557
- Generic Drug Cost
- $23K
- Opioid Claims
- 60 (6.9% rate)
- Antibiotic Claims
- 110
Patient Demographics
- Average Patient Age
- 82.1 years
- Avg HCC Risk Score
- 2.92
- Gender Split
- 69% female / 31% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Jonathan Greer, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Quetiapine Fumarate
Quetiapine Fumarate
44 claims
- Furosemide
Furosemide
35 claims
- Ciprofloxacin Hcl
Ciprofloxacin Hcl
30 claims
- Atorvastatin Calcium
Atorvastatin Calcium
27 claims
- Pantoprazole Sodium
Pantoprazole Sodium
26 claims
- Losartan Potassium
Losartan Potassium
24 claims
- Omeprazole
Omeprazole
24 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
22 claims
| Drug | Claims |
|---|---|
| Quetiapine Fumarate | 44 |
| Furosemide | 35 |
| Ciprofloxacin Hcl | 30 |
| Atorvastatin Calcium | 27 |
| Pantoprazole Sodium | 26 |
| Losartan Potassium | 24 |
| Omeprazole | 24 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 22 |
| Buspirone Hcl | 21 |
| Pradaxa Dabigatran Etexilate Mesylate | 21 |
* 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 Jonathan Greer, M.D. fits within the General Practice Physician landscape nationally.
16,838
General Practice Physician Providers in US
56
States with General Practice Physician
2,957
Avg Claims per Provider
Jonathan Greer, M.D.'s 865 claims are below the specialty average of 2,957.
Nationwide General Practice Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Greer, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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 Greer.
One of 1,869 General Practice Physician providers enrolled in California, 5 are shown here.
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 →
Frequently Asked Questions
What is Jonathan Greer, M.D.'s specialty? ▼
Jonathan Greer, M.D. specializes in General Practice Physician and practices in Moreno Valley, California. Credentials: M.D..
How much does Jonathan Greer, M.D. prescribe under Medicare Part D? ▼
In 2024, Jonathan Greer, M.D. wrote 865 Medicare Part D claims totaling $38K in drug costs for 130 beneficiaries.
Where is Jonathan Greer, M.D. located? ▼
Jonathan Greer, M.D. is located at 9921 MICHAEL WAY, Moreno Valley, CA, 92557. Phone: (951) 217-8909.
What is Jonathan Greer, M.D.'s NPI number? ▼
Jonathan Greer, M.D.'s National Provider Identifier (NPI) is 1760468839, issued on 12/20/2005.
Does Jonathan Greer, M.D. prescribe opioids? ▼
Yes, Jonathan Greer, M.D. had 60 opioid claims in 2024 with an opioid prescribing rate of 6.9%.
How many General Practice Physician providers are there in the US? ▼
There are 16,838 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,957 Medicare Part D claims per year.
What drugs does Jonathan Greer, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Jonathan Greer, M.D.'s most frequently prescribed drugs include Quetiapine Fumarate, Furosemide, Ciprofloxacin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jonathan Greer, M.D. accept Medicare? ▼
Jonathan Greer, M.D. appears in CMS Medicare data with 865 Part D claims and 130 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jonathan Greer, M.D.'s credentials? ▼
Jonathan Greer, M.D.'s NPI is 1760468839 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.
- 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.