NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1821691593
Verify on CMS → Jamie Callahan
Family Nurse Practitioner in Denver, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 210,832 in Family 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
4K
Medicare Part D claims · 345 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
84%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Jamie Callahan filed 3,773 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Denver, Colorado, prescribing 84% generic.
- 4K
- Part D claims, 2023
- 84%
- 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.
Jamie Callahan's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,773 Top 9% higher than 91% 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 Jamie Callahan?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
3,773 209% vs specialty avg
Specialty distribution in Colorado
How Family Nurse Practitioner compares to other specialties among Colorado 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 Family 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).
Jamie Callahan appears in the CMS NPPES registry as a Family Nurse Practitioner provider at 872 S VINE ST, Denver, CO, 80209, with a listed phone of (603) 512-5415. NPI 1821691593 was issued on 11/17/2020.
Medicare Part D records for calendar year 2023 show 3,773 prescription claims written by this provider, covering 345 Medicare beneficiaries and totaling roughly $462K in drug spend, split 15% brand-name and 84% generic by claim count, with an opioid prescribing rate of 0.8%.
Family Nurse Practitioner is a high-volume specialty nationwide, with 210,832 enrolled providers across 56 states and an average of 1,222 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 | 1821691593 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Gender | Female |
| NPI Issued | 11/17/2020 |
Brand vs generic prescribing mix · Typical
Jamie Callahan - brand share 15.0%
Family Nurse Practitioner average
15% brand-name claims vs 84% generic, on 3,773 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.
3,773
Total Claims
$462K
Total Drug Cost
345
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,993
- Total Day Supply
- 232,238
- Brand vs Generic
- 15% brand / 84% generic
- Brand Drug Cost
- $368K
- Generic Drug Cost
- $93K
- Opioid Claims
- 32 (0.8% rate)
- Antibiotic Claims
- 64
Patient Demographics
- Average Patient Age
- 68.9 years
- Avg HCC Risk Score
- 1.13
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 80, 65-74: 153, 75-84: 89, 85+: 23
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jamie Callahan prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
246 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
158 claims
- Levothyroxine Sodium
Levothyroxine Sodium
148 claims
- Losartan Potassium
Losartan Potassium
143 claims
- Amlodipine Besylate
Amlodipine Besylate
129 claims
- Lisinopril
Lisinopril
109 claims
- Simvastatin 90
Simvastatin
90 claims
- Rosuvastatin Calcium 87
Rosuvastatin Calcium
87 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 246 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 158 |
| Levothyroxine Sodium | 148 |
| Losartan Potassium | 143 |
| Amlodipine Besylate | 129 |
| Lisinopril | 109 |
| Simvastatin | 90 |
| Rosuvastatin Calcium | 87 |
| Sertraline Hcl | 87 |
| Omeprazole | 81 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Nurse Practitioner Overview
How Jamie Callahan fits within the Family Nurse Practitioner landscape nationally.
210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider
Jamie Callahan's 3,773 claims are above the specialty average of 1,222.
Nearby Family Nurse Practitioner Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Callahan.
Dr. Abbey Aaroe
FNP
Canon City, CO
Dr. Simone Abachiche
NP-C
Colorado Springs, CO
Christina Abbott
Longmont, CO
Dr. Patricia Abbott
ARNP
Aurora, CO
Dr. Isadora Abel
FNP
Denver, CO
Compare Family 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 Colorado medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family 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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Medical Specialties Explained
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Jamie Callahan's specialty? ▼
Jamie Callahan specializes in Family Nurse Practitioner and practices in Denver, Colorado.
How much does Jamie Callahan prescribe under Medicare Part D? ▼
In 2023, Jamie Callahan wrote 3,773 Medicare Part D claims totaling $462K in drug costs for 345 beneficiaries.
Where is Jamie Callahan located? ▼
Jamie Callahan is located at 872 S VINE ST, Denver, CO, 80209. Phone: (603) 512-5415.
What is Jamie Callahan's NPI number? ▼
Jamie Callahan's National Provider Identifier (NPI) is 1821691593, issued on 11/17/2020.
Does Jamie Callahan prescribe more brand-name or generic drugs? ▼
Jamie Callahan's prescribing is 15% brand-name and 84% generic drugs by claim count, with $368K in brand drug costs.
Does Jamie Callahan prescribe opioids? ▼
Yes, Jamie Callahan had 32 opioid claims in 2023 with an opioid prescribing rate of 0.8%.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Jamie Callahan prescribe most often? ▼
Based on 2023 Medicare Part D data, Jamie Callahan's most frequently prescribed drugs include Atorvastatin Calcium, Albuterol Sulfate Hfa, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jamie Callahan accept Medicare? ▼
Jamie Callahan appears in CMS Medicare data with 3,773 Part D claims and 345 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jamie Callahan's credentials? ▼
Jamie Callahan's NPI is 1821691593. 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
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.