NPI registry status
Active
2026 NPPES data Gerontology Nurse Practitioner NPI 1649327628 CRNP
Verify on CMS → John Hermann, CRNP
Gerontology Nurse Practitioner in Baltimore, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,056 in Gerontology 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
133
Medicare Part D claims · 58 beneficiaries · Gerontology Nurse Practitioner avg: 1K
What the federal data shows
John Hermann, CRNP filed 133 Medicare Part D claims in 2024 as a Gerontology Nurse Practitioner in Baltimore, Maryland.
- 133
- Part D claims, 2024
- ≥34th
- 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 John Hermann, CRNP
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 1649327628), first enumerated 01/04/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 133 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1649327628 · Gerontology Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1649327628
- ENUM-MID 2007
- TAX-MID 10K Gerontology Nurse
- RX-LIGHT 133
- BOOK-THIN 230 in Maryland
- PHOTO-ENUM Charles Hiemenz, NUR… · 2007
John Hermann, CRNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
133 ≥ 34th percentile 34% 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
What does the federal data show about John Hermann, CRNP?
Quality data not reportedPrimary specialty
Gerontology Nurse Practitioner
Medicare Part D claims
133 90% vs specialty avg
Specialty distribution in Maryland
How Gerontology Nurse Practitioner compares to other specialties among Maryland 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 Gerontology 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).
Practice Address
Provider Details
| NPI | 1649327628 |
|---|---|
| Specialty | Gerontology Nurse Practitioner |
| Credentials | CRNP |
| Gender | Male |
| NPI Issued | 01/04/2007 |
Hospital and facility affiliations
Facilities where John Hermann, CRNP 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.
Dimensions Healthcare Associates, Inc
Upper Marlboro, MD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
133
Total Claims
$3K
Total Drug Cost
58
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 255
- Total Day Supply
- 6,651
- Generic Drug Cost
- $984
- Antibiotic Claims
- 21
Patient Demographics
- Average Patient Age
- 75.2 years
- Avg HCC Risk Score
- 2.58
- Gender Split
- 48% female / 52% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What John Hermann, CRNP prescribes most
Top Medicare Part D drugs by claim count, 2024
- Clopidogrel
Clopidogrel
58 claims
- Nitroglycerin 13
Nitroglycerin
13 claims
- Pantoprazole Sodium 12
Pantoprazole Sodium
12 claims
- Amoxicillin 11
Amoxicillin
11 claims
| Drug | Claims |
|---|---|
| Clopidogrel Clopidogrel Bisulfate | 58 |
| Nitroglycerin | 13 |
| Pantoprazole Sodium | 12 |
| Amoxicillin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gerontology Nurse Practitioner Overview
How John Hermann, CRNP fits within the Gerontology Nurse Practitioner landscape nationally.
10,056
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,350
Avg Claims per Provider
John Hermann, CRNP's 133 claims are below the specialty average of 1,350.
Nationwide Gerontology Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Hermann, both outside Maryland so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gerontology Nurse Practitioner Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Hermann.
One of 230 Gerontology Nurse Practitioner providers enrolled in Maryland, 5 are shown here.
Aderonke Abatan
Crofton, MD
Emily Ackiss
Easton, MD
Laraba Adejo
Windsor Mill, MD
Eric Anapolsky
CRNP
Elkridge, MD
Suzette Anderson
CRNP
Prince Frederick, MD
Compare Gerontology Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Hermann, CRNP's specialty? ▼
John Hermann, CRNP specializes in Gerontology Nurse Practitioner and practices in Baltimore, Maryland. Credentials: CRNP.
How much does John Hermann, CRNP prescribe under Medicare Part D? ▼
In 2024, John Hermann, CRNP wrote 133 Medicare Part D claims totaling $3K in drug costs for 58 beneficiaries.
Where is John Hermann, CRNP located? ▼
John Hermann, CRNP is located at 201 E UNIVERSITY PKWY, Baltimore, MD, 21218. Phone: (410) 554-2008.
What is John Hermann, CRNP's NPI number? ▼
John Hermann, CRNP's National Provider Identifier (NPI) is 1649327628, issued on 01/04/2007.
How many Gerontology Nurse Practitioner providers are there in the US? ▼
There are 10,056 Gerontology Nurse Practitioner providers across 54 states in the US. The average Gerontology Nurse Practitioner provider writes 1,350 Medicare Part D claims per year.
What drugs does John Hermann, CRNP prescribe most often? ▼
Based on 2024 Medicare Part D data, John Hermann, CRNP's most frequently prescribed drugs include Clopidogrel, Nitroglycerin, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Hermann, CRNP accept Medicare? ▼
John Hermann, CRNP appears in CMS Medicare data with 133 Part D claims and 58 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Hermann, CRNP's credentials? ▼
John Hermann, CRNP's NPI is 1649327628 with credentials CRNP. 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.