2026 NPPES data Gastroenterology Physician NPI 1376598185 MD
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WILLIAM EHRHARDT, MD

Gastroenterology Physician in COON RAPIDS, Minnesota. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
975
Medicare Part D claims · 604 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

WILLIAM EHRHARDT, MD filed 975 Medicare Part D claims in 2023 as a Gastroenterology Physician in COON RAPIDS, Minnesota, prescribing 87% generic.

975
Part D claims, 2023
87%
generic prescribing
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.

WILLIAM EHRHARDT, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

975 Top 25% higher than 75% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

WILLIAM EHRHARDT, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — 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 WILLIAM EHRHARDT, MD?

Quality data not reported

NPI registry status

Active

Issued 05/23/2006

NPI 1376598185

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

975 17% vs specialty avg

2023 prescription claims

Specialty avg: 833

Specialty distribution in Minnesota

How Gastroenterology Physician compares to other specialties among Minnesota providers

Minnesota providers

Gastroenterology Physician share within Minnesota

1. Gastroenterology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Gastroenterology Physician share within Minnesota

Specialty board-certification context

Estimated specialty board-certified rate — Gastroenterology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Gastroenterology Physician ABMS/AOA estimate

Est. board-certified rate (Gastroenterology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Gastroenterology Physician) — ABMS / AOA estimate

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).

WILLIAM EHRHARDT, MD appears in the CMS NPPES registry as a Gastroenterology Physician provider holding MD credentials at 9145 SPRINGBROOK DR NW STE 200, COON RAPIDS, MN, 55433, with a listed phone of (612) 871-1145. NPI 1376598185 was issued on 05/23/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what EHRHARDT most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 975 prescription claims written by this provider, covering 604 Medicare beneficiaries and totaling roughly $266K in drug spend, split 13% brand-name and 87% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 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

9145 SPRINGBROOK DR NW STE 200
COON RAPIDS, MN 55433

Provider Details

NPI 1376598185
Specialty Gastroenterology Physician
Credentials MD
Gender Male
NPI Issued 05/23/2006

Hospital and facility affiliations

Facilities where WILLIAM EHRHARDT, MD 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.

MNGI DIGESTIVE HEALTH PA
COON RAPIDS, MN

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

WILLIAM EHRHARDT, MD — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 975 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.

975
Total Claims
$266K
Total Drug Cost
604
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,479
Total Day Supply
28,328
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$232K
Generic Drug Cost
$35K
Antibiotic Claims
23

Patient Demographics

Average Patient Age
71.7 years
Avg HCC Risk Score
0.93
Gender Split
48% female / 52% male
Age Distribution
<65: 39, 65-74: 370, 75-84: 176, 85+: 19

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What WILLIAM EHRHARDT, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Omeprazole
110
Peg 3350-Electrolyte
Sodium Chloride/Nahco3/Kcl/Peg
53
Azathioprine
46
Ursodiol
24
Dicyclomine Hcl
19
Budesonide Dr
Budesonide
18
Famotidine
18
Budesonide Ec
Budesonide
17
Sulfasalazine
17
Mesalamine
16

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Gastroenterology Physician Overview

How WILLIAM EHRHARDT, MD fits within the Gastroenterology Physician landscape nationally.

16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider

WILLIAM EHRHARDT, MD's 975 claims are above the specialty average of 833.

Nearby Gastroenterology Physician Providers in Minnesota

Other clinicians with the same primary specialty enrolled in Minnesota, drawn from the same CMS NPPES roster as EHRHARDT.

Compare Gastroenterology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM EHRHARDT, MD's specialty?
WILLIAM EHRHARDT, MD specializes in Gastroenterology Physician and practices in COON RAPIDS, Minnesota. Credentials: MD.
How much does WILLIAM EHRHARDT, MD prescribe under Medicare Part D?
In 2023, WILLIAM EHRHARDT, MD wrote 975 Medicare Part D claims totaling $266K in drug costs for 604 beneficiaries.
Where is WILLIAM EHRHARDT, MD located?
WILLIAM EHRHARDT, MD is located at 9145 SPRINGBROOK DR NW STE 200, COON RAPIDS, MN, 55433. Phone: (612) 871-1145.
What is WILLIAM EHRHARDT, MD's NPI number?
WILLIAM EHRHARDT, MD's National Provider Identifier (NPI) is 1376598185, issued on 05/23/2006.
Does WILLIAM EHRHARDT, MD prescribe more brand-name or generic drugs?
WILLIAM EHRHARDT, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $232K in brand drug costs.
How many Gastroenterology Physician providers are there in the US?
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does WILLIAM EHRHARDT, MD prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM EHRHARDT, MD's most frequently prescribed drugs include Omeprazole, Peg 3350-Electrolyte, Azathioprine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM EHRHARDT, MD accept Medicare?
WILLIAM EHRHARDT, MD appears in CMS Medicare data with 975 Part D claims and 604 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM EHRHARDT, MD's credentials?
WILLIAM EHRHARDT, MD's NPI is 1376598185 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

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