NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1073521332 MD
Verify on CMS → Kenneth Kirk, MD
Geriatric Medicine (Internal Medicine) Physician in Tulsa, Oklahoma.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,161 in Geriatric Medicine (Internal Medicine) Physician, 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
6K
Medicare Part D claims · 382 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
81%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
85.8/100
▲ 3 pts above national avg 83.1 · Above neutral
Industry payments
$67.97
4 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
Kenneth Kirk, MD reported a CMS MIPS final score of 85.8/100 - above the 83.1 national average - and filed 5,968 Medicare Part D claims in 2023.
- 85.8/100
- MIPS score · +3 vs avg
- 6K
- Part D claims, 2023
- 81%
- 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.
Kenneth Kirk, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
86 49th percentile higher than 49% 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 Kenneth Kirk, MD sits
This provider among geriatric medicine (internal medicine) physician peers
Across the 724 geriatric medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Kenneth Kirk, MD writes more Part D claims than 71% of them and scores higher on MIPS quality than 53% - placing this provider in the high-volume, high-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 geriatric medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is Kenneth Kirk, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Kenneth Kirk, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Kenneth Kirk, MD?
High performer (top quartile)Primary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
5,968 34% vs specialty avg
MIPS final score
85.8/100 2.7 pts vs avg
Specialty distribution in Oklahoma
How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Oklahoma providers
Medicare quality performance, MIPS
Kenneth Kirk, MD's 2023 MIPS final score plotted against the Geriatric Medicine (Internal Medicine) Physician national average
- MIPS Final Score
- 85.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Geriatric Medicine (Internal Medicine) Physician) - 85.8/100 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).
Kenneth Kirk, MD appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding MD credentials at 6506 E 89TH PL, Tulsa, OK, 74133, with a listed phone of (918) 494-2051. NPI 1073521332 was issued on 08/03/2006.
Medicare Part D records for calendar year 2023 show 5,968 prescription claims written by this provider, covering 382 Medicare beneficiaries and totaling roughly $882K in drug spend, split 18% brand-name and 81% generic by claim count, with an opioid prescribing rate of 6.7%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 85.8/100 for the 2023 performance year (Quality 90.7, Cost 52), compared with the national average of 83.1.
Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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 | 1073521332 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/03/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
85.8356
Final Score
Avg: 83.1
90.7464
Quality
51.9578
Cost
100
Promoting Interoperability
Reporting: Group practice
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 Kenneth Kirk, MD. Source: openpaymentsdata.cms.gov.
Total received
$68
Largest payer
ABBVIE 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.
Brand vs generic prescribing mix · Typical
Kenneth Kirk, MD - brand share 18.0%
Geriatric Medicine (Internal Medicine) Physician average
18% brand-name claims vs 81% generic, on 5,968 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.
5,968
Total Claims
$882K
Total Drug Cost
382
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,249
- Total Day Supply
- 291,491
- Brand vs Generic
- 18% brand / 81% generic
- Brand Drug Cost
- $742K
- Generic Drug Cost
- $137K
- Opioid Claims
- 397 (6.7% rate)
- Antibiotic Claims
- 146
Patient Demographics
- Average Patient Age
- 67.6 years
- Avg HCC Risk Score
- 1.72
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 127, 65-74: 142, 75-84: 91, 85+: 22
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kenneth Kirk, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
238 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
221 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
161 claims
- Levothyroxine Sodium
Levothyroxine Sodium
144 claims
- Gabapentin
Gabapentin
124 claims
- Pregabalin
Pregabalin
118 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
117 claims
- Metformin Hcl
Metformin Hcl
104 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 238 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 221 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 161 |
| Levothyroxine Sodium | 144 |
| Gabapentin | 124 |
| Pregabalin | 118 |
| Rosuvastatin Calcium | 117 |
| Metformin Hcl | 104 |
| Lisinopril | 99 |
| Olanzapine | 96 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Geriatric Medicine (Internal Medicine) Physician in OK →
All providers in Oklahoma →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How Kenneth Kirk, MD fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider
Kenneth Kirk, MD's 5,968 claims are above the specialty average of 4,450.
Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Kirk.
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 Oklahoma medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Geriatric Medicine (Internal Medicine) Physician 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Oklahoma
Frequently Asked Questions
What is Kenneth Kirk, MD's specialty? ▼
Kenneth Kirk, MD specializes in Geriatric Medicine (Internal Medicine) Physician and practices in Tulsa, Oklahoma. Credentials: MD.
How much does Kenneth Kirk, MD prescribe under Medicare Part D? ▼
In 2023, Kenneth Kirk, MD wrote 5,968 Medicare Part D claims totaling $882K in drug costs for 382 beneficiaries.
What is Kenneth Kirk, MD's Medicare quality score? ▼
Kenneth Kirk, MD has a CMS MIPS Final Score of 85.8/100 (Quality: 90.7, Cost: 52). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Kenneth Kirk, MD located? ▼
Kenneth Kirk, MD is located at 6506 E 89TH PL, Tulsa, OK, 74133. Phone: (918) 494-2051.
What is Kenneth Kirk, MD's NPI number? ▼
Kenneth Kirk, MD's National Provider Identifier (NPI) is 1073521332, issued on 08/03/2006.
Does Kenneth Kirk, MD prescribe more brand-name or generic drugs? ▼
Kenneth Kirk, MD's prescribing is 18% brand-name and 81% generic drugs by claim count, with $742K in brand drug costs.
Does Kenneth Kirk, MD prescribe opioids? ▼
Yes, Kenneth Kirk, MD had 397 opioid claims in 2023 with an opioid prescribing rate of 6.7%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does Kenneth Kirk, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Kenneth Kirk, MD's most frequently prescribed drugs include Atorvastatin Calcium, Hydrocodone-Acetaminophen, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kenneth Kirk, MD accept Medicare? ▼
Kenneth Kirk, MD appears in CMS Medicare data with 5,968 Part D claims and 382 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kenneth Kirk, MD's credentials? ▼
Kenneth Kirk, MD's NPI is 1073521332 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
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.