NPI registry status
Active
2026 NPPES data Primary Care Nurse Practitioner NPI 1609485481
Verify on CMS → Kristy Mumby
Primary Care Nurse Practitioner in Kalamazoo, Michigan.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,179 in Primary Care 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
2K
Medicare Part D claims · 474 beneficiaries · Primary Care Nurse Practitioner avg: 1K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
84.9/100
▲ 2 pts above national avg 83.1 · Above neutral
Industry payments
$180.12
10 payments · CMS Open Payments (Sunshine Act)
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
Kristy Mumby reported a CMS MIPS final score of 84.9/100 - above the 83.1 national average - and filed 1,598 Medicare Part D claims in 2023.
- 84.9/100
- MIPS score · +2 vs avg
- 2K
- Part D claims, 2023
- 83%
- generic prescribing
- $180.12
- industry payments (Sunshine Act)
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.
Kristy Mumby's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
85 45th percentile higher than 45% 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 Kristy Mumby sits
This provider among primary care nurse practitioner peers
Across the 958 primary care nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Kristy Mumby writes more Part D claims than 69% of them and scores higher on MIPS quality than 47% - placing this provider in the high-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 primary care nurse practitioner peer from a representative sample of 60; the gold marker is Kristy Mumby. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Kristy Mumby?
Near national averagePrimary specialty
Primary Care Nurse Practitioner
Medicare Part D claims
1,598 17% vs specialty avg
MIPS final score
84.9/100 1.8 pts vs avg
Specialty distribution in Michigan
How Primary Care Nurse Practitioner compares to other specialties among Michigan providers
Medicare quality performance, MIPS
Kristy Mumby's 2023 MIPS final score plotted against the Primary Care Nurse Practitioner national average
- MIPS Final Score
- 84.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Primary Care Nurse Practitioner) - 84.9/100 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).
Kristy Mumby appears in the CMS NPPES registry as a Primary Care Nurse Practitioner provider at 601 JOHN ST, Kalamazoo, MI, 49007, with a listed phone of (269) 349-9745. NPI 1609485481 was issued on 07/28/2020.
Medicare Part D records for calendar year 2023 show 1,598 prescription claims written by this provider, covering 474 Medicare beneficiaries and totaling roughly $205K in drug spend, split 17% brand-name and 83% generic by claim count, with an opioid prescribing rate of 0.9%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 84.9/100 for the 2023 performance year (Quality 81.3, Cost 68.3), compared with the national average of 83.1.
Primary Care Nurse Practitioner is a mid-sized specialty nationwide, with 10,179 enrolled providers across 54 states and an average of 1,363 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 | 1609485481 |
|---|---|
| Specialty | Primary Care Nurse Practitioner |
| Gender | Female |
| NPI Issued | 07/28/2020 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
84.8851
Final Score
Avg: 83.1
81.2912
Quality
68.3258
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Kristy Mumby 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.
Bronson Methodist Hospital
★★★★☆ 4/5
Kalamazoo, MI
Acute Care Hospitals
CMS CCN: 230017
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Kristy Mumby. Source: openpaymentsdata.cms.gov.
Total received
$180
Largest payer
Sumitomo Pharma America, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 - they are NOT specific to Kristy Mumby. To verify Kristy Mumby's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases
MI-BOM 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 Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Kristy Mumby - brand share 17.0%
Primary Care Nurse Practitioner average
17% brand-name claims vs 83% generic, on 1,598 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.
1,598
Total Claims
$205K
Total Drug Cost
474
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,668
- Total Day Supply
- 74,062
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $160K
- Generic Drug Cost
- $45K
- Opioid Claims
- 14 (0.9% rate)
- Antibiotic Claims
- 254
Patient Demographics
- Average Patient Age
- 74.7 years
- Avg HCC Risk Score
- 1.45
- Gender Split
- 39% female / 61% male
- Age Distribution
- <65: 44, 65-74: 167, 75-84: 197, 85+: 66
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kristy Mumby prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tamsulosin Hcl
Tamsulosin Hcl
433 claims
- Finasteride
Finasteride
259 claims
- Myrbetriq
Myrbetriq
226 claims
- Solifenacin Succin… 119
Solifenacin Succinate
119 claims
- Cephalexin 78
Cephalexin
78 claims
- Oxybutynin Chlorid… 55
Oxybutynin Chloride Er
55 claims
- Sulfamethoxazole-T… 50
Sulfamethoxazole-Trimethoprim
50 claims
- Methenamine Hippur… 45
Methenamine Hippurate
45 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 433 |
| Finasteride | 259 |
| Myrbetriq Mirabegron | 226 |
| Solifenacin Succinate | 119 |
| Cephalexin | 78 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 55 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 50 |
| Methenamine Hippurate | 45 |
| Estradiol | 41 |
| Ciprofloxacin Hcl | 32 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Primary Care Nurse Practitioner Overview
How Kristy Mumby fits within the Primary Care Nurse Practitioner landscape nationally.
10,179
Primary Care Nurse Practitioner Providers in US
54
States with Primary Care Nurse Practitioner
1,363
Avg Claims per Provider
Kristy Mumby's 1,598 claims are above the specialty average of 1,363.
Nearby Primary Care Nurse Practitioner Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Mumby.
Dr. Jaclyn Abbott
NP
Ann Arbor, MI
Dr. Kathryn Ackers
NP
Dexter, MI
Munazza Ahmed
Livonia, MI
Dr. Kyle Ahnert
NP
Grayling, MI
Dr. Lynn Marie Alexanders-Klima
DNP, APRN- BC
Ypsilanti, MI
Compare Primary Care 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 Michigan medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Primary Care 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 Kristy Mumby's specialty? ▼
Kristy Mumby specializes in Primary Care Nurse Practitioner and practices in Kalamazoo, Michigan.
How much does Kristy Mumby prescribe under Medicare Part D? ▼
In 2023, Kristy Mumby wrote 1,598 Medicare Part D claims totaling $205K in drug costs for 474 beneficiaries.
What is Kristy Mumby's Medicare quality score? ▼
Kristy Mumby has a CMS MIPS Final Score of 84.9/100 (Quality: 81.3, Cost: 68.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Kristy Mumby located? ▼
Kristy Mumby is located at 601 JOHN ST, Kalamazoo, MI, 49007. Phone: (269) 349-9745.
What is Kristy Mumby's NPI number? ▼
Kristy Mumby's National Provider Identifier (NPI) is 1609485481, issued on 07/28/2020.
Does Kristy Mumby prescribe more brand-name or generic drugs? ▼
Kristy Mumby's prescribing is 17% brand-name and 83% generic drugs by claim count, with $160K in brand drug costs.
Does Kristy Mumby prescribe opioids? ▼
Yes, Kristy Mumby had 14 opioid claims in 2023 with an opioid prescribing rate of 0.9%.
How many Primary Care Nurse Practitioner providers are there in the US? ▼
There are 10,179 Primary Care Nurse Practitioner providers across 54 states in the US. The average Primary Care Nurse Practitioner provider writes 1,363 Medicare Part D claims per year.
What drugs does Kristy Mumby prescribe most often? ▼
Based on 2023 Medicare Part D data, Kristy Mumby's most frequently prescribed drugs include Tamsulosin Hcl, Finasteride, Myrbetriq. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kristy Mumby accept Medicare? ▼
Kristy Mumby appears in CMS Medicare data with 1,598 Part D claims and 474 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kristy Mumby's credentials? ▼
Kristy Mumby's NPI is 1609485481. 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.