NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1578698270 MD
Verify on CMS → Kathleen Locker, MD
Family Medicine Physician in Chattanooga, Tennessee.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family 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
16K
Medicare Part D claims · 547 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
82%
generic claims · 18% 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
Kathleen Locker, MD filed 15,757 Medicare Part D claims in 2023 as a Family Medicine Physician in Chattanooga, Tennessee, prescribing 82% generic.
- 16K
- Part D claims, 2023
- 82%
- generic prescribing
- ≥98th
- 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.
CMS NPPES provider registry desk
NPI 1578698270 · Family Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-HEAVY · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1578698270
- ENUM-MID 2007
- TAX-MEGA 148K Family Medicine
- RX-HEAVY 16K claims
- BOOK-LIGHT 2,533 in Tennessee
- PHOTO-ENUM Mark Stabile · 2007
Kathleen Locker, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
15,757 ≥ 98th percentile 98% of 1,370,886 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 · 2023
◑
Board-eligible specialty (heuristic, not verified)
Kathleen Locker, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Kathleen Locker, MD?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
15,757 361% vs specialty avg
Specialty distribution in Tennessee
How Family Medicine Physician compares to other specialties among Tennessee 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 Medicine Physician. 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 | 1578698270 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 02/22/2007 |
Brand vs generic prescribing mix · Typical
Kathleen Locker, MD - brand share 18.0%
Family Medicine Physician average
18% brand-name claims vs 82% generic, on 15,757 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.
15,757
Total Claims
$992K
Total Drug Cost
547
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 15,990
- Total Day Supply
- 295,130
- Brand vs Generic
- 18% brand / 82% generic
- Brand Drug Cost
- $729K
- Generic Drug Cost
- $260K
- Opioid Claims
- 779 (4.9% rate)
- Antibiotic Claims
- 369
Patient Demographics
- Average Patient Age
- 75.4 years
- Avg HCC Risk Score
- 2.87
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 85, 65-74: 163, 75-84: 160, 85+: 139
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kathleen Locker, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
1,431 claims
- Furosemide
Furosemide
954 claims
- Atorvastatin Calcium
Atorvastatin Calcium
660 claims
- Eliquis 467
Eliquis
467 claims
- Potassium Chloride 441
Potassium Chloride
441 claims
- Amlodipine Besylate 409
Amlodipine Besylate
409 claims
- Lorazepam 387
Lorazepam
387 claims
- Omeprazole 355
Omeprazole
355 claims
| Drug | Claims |
|---|---|
| Gabapentin | 1,431 |
| Furosemide | 954 |
| Atorvastatin Calcium | 660 |
| Eliquis Apixaban | 467 |
| Potassium Chloride | 441 |
| Amlodipine Besylate | 409 |
| Lorazepam | 387 |
| Omeprazole | 355 |
| Carvedilol | 330 |
| Tramadol Hcl | 314 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Kathleen Locker, MD fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Kathleen Locker, MD's 15,757 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Locker, both outside Tennessee 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 Family Medicine Physician Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Locker.
One of 2,533 Family Medicine Physician providers enrolled in Tennessee, 5 are shown here.
Dr. John Aaron
MD
Clarksville, TN
Dr. Rebecca Aaron
MD
Clarksville, TN
Dr. Richard Aasheim
M.D.
Greeneville, TN
Dr. Julia Abraham
MD
Knoxville, TN
Dr. Sydney Abramson
MD
Murfreesboro, TN
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Kathleen Locker, MD's specialty? ▼
Kathleen Locker, MD specializes in Family Medicine Physician and practices in Chattanooga, Tennessee. Credentials: MD.
How much does Kathleen Locker, MD prescribe under Medicare Part D? ▼
In 2023, Kathleen Locker, MD wrote 15,757 Medicare Part D claims totaling $992K in drug costs for 547 beneficiaries.
Where is Kathleen Locker, MD located? ▼
Kathleen Locker, MD is located at 2700 PARKWOOD AVENUE, Chattanooga, TN, 37404. Phone: (423) 624-1533.
What is Kathleen Locker, MD's NPI number? ▼
Kathleen Locker, MD's National Provider Identifier (NPI) is 1578698270, issued on 02/22/2007.
Does Kathleen Locker, MD prescribe more brand-name or generic drugs? ▼
Kathleen Locker, MD's prescribing is 18% brand-name and 82% generic drugs by claim count, with $729K in brand drug costs.
Does Kathleen Locker, MD prescribe opioids? ▼
Yes, Kathleen Locker, MD had 779 opioid claims in 2023 with an opioid prescribing rate of 4.9%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Kathleen Locker, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Kathleen Locker, MD's most frequently prescribed drugs include Gabapentin, Furosemide, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kathleen Locker, MD accept Medicare? ▼
Kathleen Locker, MD appears in CMS Medicare data with 15,757 Part D claims and 547 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kathleen Locker, MD's credentials? ▼
Kathleen Locker, MD's NPI is 1578698270 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.
- 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.