NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1558325787 MD
Verify on CMS → Nathaniel Howard, MD
Gastroenterology Physician in Oroville, 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 16,601 in Gastroenterology 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
16
Medicare Part D claims · Gastroenterology Physician avg: 833
MIPS score
73.3/100
▼ 10 pts below national avg 83.1 · Mid-tier
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Nathaniel Howard, MD reported a CMS MIPS final score of 73.3/100 - below the 83.1 national average - and filed 16 Medicare Part D claims in 2023.
- 73.3/100
- MIPS score · -10 vs avg
- 16
- 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.
Nathaniel Howard, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
73 11th percentile higher than 11% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Nathaniel Howard, MD sits
This provider among gastroenterology physician peers
Across the 5,957 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Nathaniel Howard, MD writes more Part D claims than 1% of them and scores higher on MIPS quality than 10% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one gastroenterology physician peer from a representative sample of 60; the gold marker is Nathaniel Howard, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Nathaniel Howard, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Nathaniel Howard, MD?
Below national averagePrimary specialty
Gastroenterology Physician
Medicare Part D claims
16 98% vs specialty avg
MIPS final score
73.3/100 9.8 pts vs avg
Specialty distribution in California
How Gastroenterology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Nathaniel Howard, MD's 2023 MIPS final score plotted against the Gastroenterology Physician national average
- MIPS Final Score
- 73.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Gastroenterology Physician) - 73.3/100 vs national avg 83.1
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).
Nathaniel Howard, MD appears in the CMS NPPES registry as a Gastroenterology Physician provider holding MD credentials at 2721 OLIVE HWY, Oroville, CA, 95966, with a listed phone of (530) 533-6061. NPI 1558325787 was issued on 04/14/2006.
Medicare Part D records for calendar year 2023 show 16 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $202 in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.3/100 for the 2023 performance year (Quality 36.9, Cost 57.8), compared with the national average of 83.1.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,601 enrolled providers across 54 states and an average of 833 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 | 1558325787 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/14/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.3427
Final Score
Avg: 83.1
36.895
Quality
57.8239
Cost
100
Promoting Interoperability
Reporting: Group practice
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 Nathaniel Howard, MD. To verify Nathaniel Howard, MD'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.
16
Total Claims
$202
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 25
- Total Day Supply
- 727
- Brand Drug Cost
- $0
- Generic Drug Cost
- $202
Patient Demographics
- Average Patient Age
- 70.8 years
- Avg HCC Risk Score
- 1.33
Gastroenterology Physician Overview
How Nathaniel Howard, MD fits within the Gastroenterology Physician landscape nationally.
16,601
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Nathaniel Howard, MD's 16 claims are below the specialty average of 833.
Nearby Gastroenterology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Howard.
Dr. David Aarons
MD
Lodi, CA
Dr. Constante Abaya
MD
Oxnard, CA
Dr. Homan Abdollahzadeh
MD
Palm Springs, CA
Dr. John Abdulian
M.D.
Fresno, CA
Dr. Hussein Abidali
DO
Rancho Cucamonga, CA
Compare Gastroenterology 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 Gastroenterology 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 Nathaniel Howard, MD's specialty? ▼
Nathaniel Howard, MD specializes in Gastroenterology Physician and practices in Oroville, California. Credentials: MD.
How much does Nathaniel Howard, MD prescribe under Medicare Part D? ▼
In 2023, Nathaniel Howard, MD wrote 16 Medicare Part D claims totaling $202 in drug costs for N/A beneficiaries.
What is Nathaniel Howard, MD's Medicare quality score? ▼
Nathaniel Howard, MD has a CMS MIPS Final Score of 73.3/100 (Quality: 36.9, Cost: 57.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Nathaniel Howard, MD located? ▼
Nathaniel Howard, MD is located at 2721 OLIVE HWY, Oroville, CA, 95966. Phone: (530) 533-6061.
What is Nathaniel Howard, MD's NPI number? ▼
Nathaniel Howard, MD's National Provider Identifier (NPI) is 1558325787, issued on 04/14/2006.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,601 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
Does Nathaniel Howard, MD accept Medicare? ▼
Nathaniel Howard, MD appears in CMS Medicare data with 16 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nathaniel Howard, MD's credentials? ▼
Nathaniel Howard, MD's NPI is 1558325787 with credentials MD. 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
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.