NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1578665121 RN, CFNP
Verify on CMS → Eric Griffith, RN, CFNP
Nurse Practitioner in Duluth, Minnesota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 87,700 in Nurse Practitioner, 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
1K
Medicare Part D claims · 195 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
42%
generic claims · 50% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Eric Griffith, RN, CFNP filed 1,344 Medicare Part D claims in 2023 as a Nurse Practitioner in Duluth, Minnesota, prescribing 42% generic.
- 1K
- Part D claims, 2023
- 42%
- generic prescribing
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.
Eric Griffith, RN, CFNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,344 Top 21% higher than 79% 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
What does the federal data show about Eric Griffith, RN, CFNP?
Quality data not reportedPrimary specialty
Nurse Practitioner
Medicare Part D claims
1,344 24% vs specialty avg
Specialty distribution in Minnesota
How Nurse Practitioner compares to other specialties among Minnesota 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 Nurse Practitioner. 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).
Eric Griffith, RN, CFNP appears in the CMS NPPES registry as a Nurse Practitioner provider holding RN, CFNP credentials at 400 EAST THIRD STREET, Duluth, MN, 55805, with a listed phone of (218) 786-8364. NPI 1578665121 was issued on 09/03/2006.
Medicare Part D records for calendar year 2023 show 1,344 prescription claims written by this provider, covering 195 Medicare beneficiaries and totaling roughly $690K in drug spend, split 50% brand-name and 42% generic by claim count.
Nurse Practitioner is a high-volume specialty nationwide, with 87,700 enrolled providers across 56 states and an average of 1,084 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 | 1578665121 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | RN, CFNP |
| Gender | Male |
| NPI Issued | 09/03/2006 |
Brand vs generic prescribing mix · Brand-heavy
Eric Griffith, RN, CFNP - brand share 50.0%
Nurse Practitioner average
50% brand-name claims vs 42% generic, on 1,344 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.
1,344
Total Claims
$690K
Total Drug Cost
195
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,999
- Total Day Supply
- 88,671
- Brand vs Generic
- 50% brand / 42% generic
- Brand Drug Cost
- $648K
- Generic Drug Cost
- $29K
Patient Demographics
- Average Patient Age
- 69.6 years
- Avg HCC Risk Score
- 1.45
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 41, 65-74: 91, 75-84: 47, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Eric Griffith, RN, CFNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
236 claims
- Methimazole 73
Methimazole
73 claims
- Novolog Flexpen 58
Novolog Flexpen
58 claims
- Ozempic 54
Ozempic
54 claims
- Synthroid 54
Synthroid
54 claims
- Metformin Hcl Er 51
Metformin Hcl Er
51 claims
- Tresiba Flextouch … 34
Tresiba Flextouch U-100
34 claims
- Atorvastatin Calcium 28
Atorvastatin Calcium
28 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 236 |
| Methimazole | 73 |
| Novolog Flexpen Insulin Aspart | 58 |
| Ozempic Semaglutide | 54 |
| Synthroid Levothyroxine Sodium | 54 |
| Metformin Hcl Er Metformin Hcl | 51 |
| Tresiba Flextouch U-100 Insulin Degludec | 34 |
| Atorvastatin Calcium | 28 |
| Humalog Kwikpen U-100 Insulin Lispro | 28 |
| Gabapentin | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Eric Griffith, RN, CFNP fits within the Nurse Practitioner landscape nationally.
87,700
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider
Eric Griffith, RN, CFNP's 1,344 claims are above the specialty average of 1,084.
Nearby Nurse Practitioner Providers in Minnesota
Other clinicians with the same primary specialty enrolled in Minnesota, drawn from the same CMS NPPES roster as Griffith.
Dr. Lori Aasen
CNP
Rochester, MN
Dr. Rosalind Abara
RN, MSN, PHD, CRNP
Minnetonka, MN
Halimat Abdulganiyu
Saint Paul, MN
Elizabeth Abell
St Louis Park, MN
Dr. Caroline Abenakyo
FNP-C
Minneapolis, MN
Compare Nurse Practitioner 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 Minnesota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nurse Practitioner 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 Eric Griffith, RN, CFNP's specialty? ▼
Eric Griffith, RN, CFNP specializes in Nurse Practitioner and practices in Duluth, Minnesota. Credentials: RN, CFNP.
How much does Eric Griffith, RN, CFNP prescribe under Medicare Part D? ▼
In 2023, Eric Griffith, RN, CFNP wrote 1,344 Medicare Part D claims totaling $690K in drug costs for 195 beneficiaries.
Where is Eric Griffith, RN, CFNP located? ▼
Eric Griffith, RN, CFNP is located at 400 EAST THIRD STREET, Duluth, MN, 55805. Phone: (218) 786-8364.
What is Eric Griffith, RN, CFNP's NPI number? ▼
Eric Griffith, RN, CFNP's National Provider Identifier (NPI) is 1578665121, issued on 09/03/2006.
Does Eric Griffith, RN, CFNP prescribe more brand-name or generic drugs? ▼
Eric Griffith, RN, CFNP's prescribing is 50% brand-name and 42% generic drugs by claim count, with $648K in brand drug costs.
How many Nurse Practitioner providers are there in the US? ▼
There are 87,700 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does Eric Griffith, RN, CFNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Eric Griffith, RN, CFNP's most frequently prescribed drugs include Levothyroxine Sodium, Methimazole, Novolog Flexpen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Eric Griffith, RN, CFNP accept Medicare? ▼
Eric Griffith, RN, CFNP appears in CMS Medicare data with 1,344 Part D claims and 195 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eric Griffith, RN, CFNP's credentials? ▼
Eric Griffith, RN, CFNP's NPI is 1578665121 with credentials RN, CFNP. 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.