NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1891037875 MD
Verify on CMS → Leah Gilliam, MD
Family Medicine Physician in Lexington, 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 150,125 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
3K
Medicare Part D claims · 124 beneficiaries · Family Medicine Physician avg: 4K
What the federal data shows
Leah Gilliam, MD filed 3,066 Medicare Part D claims in 2024 as a Family Medicine Physician in Lexington, Tennessee.
- 3K
- Part D claims, 2024
- ≥88th
- 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 Leah Gilliam, MD
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 1891037875), first enumerated 03/18/2013.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 3,066 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- 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 1891037875 · Family Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1891037875
- ENUM-MID 2013
- TAX-MEGA 150K Family Medicine
- RX-MID 3,066
- BOOK-LIGHT 2,570 in Tennessee
- PHOTO-ENUM Kuang-Ning Huang · 2013
Leah Gilliam, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
3,066 ≥ 88th percentile 88% 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
◑
Board-eligible specialty (heuristic, not verified)
Leah Gilliam, 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 Leah Gilliam, MD?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
3,066 13% 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 | 1891037875 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 03/18/2013 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
3,066
Total Claims
$246K
Total Drug Cost
124
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,962.7
- Total Day Supply
- 172,304
- Generic Drug Cost
- $31K
- Opioid Claims
- 46 (1.5% rate)
- Antibiotic Claims
- 101
Patient Demographics
- Average Patient Age
- 74.9 years
- Avg HCC Risk Score
- 1.06
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 11, 65-74: 48, 75-84: 46, 85+: 19
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Leah Gilliam, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
171 claims
- Levothyroxine Sodium
Levothyroxine Sodium
108 claims
- Famotidine
Famotidine
105 claims
- Losartan Potassium
Losartan Potassium
105 claims
- Gabapentin
Gabapentin
104 claims
- Amlodipine Besylate
Amlodipine Besylate
102 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
88 claims
- Duloxetine Hcl
Duloxetine Hcl
78 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 171 |
| Levothyroxine Sodium | 108 |
| Famotidine | 105 |
| Losartan Potassium | 105 |
| Gabapentin | 104 |
| Amlodipine Besylate | 102 |
| Rosuvastatin Calcium | 88 |
| Duloxetine Hcl | 78 |
| Hydrochlorothiazide | 74 |
| Omeprazole | 71 |
* 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 Leah Gilliam, MD fits within the Family Medicine Physician landscape nationally.
150,125
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,519
Avg Claims per Provider
Leah Gilliam, MD's 3,066 claims are below the specialty average of 3,519.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Gilliam, both outside Tennessee so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2013)
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 Gilliam.
One of 2,570 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 Leah Gilliam, MD's specialty? ▼
Leah Gilliam, MD specializes in Family Medicine Physician and practices in Lexington, Tennessee. Credentials: MD.
How much does Leah Gilliam, MD prescribe under Medicare Part D? ▼
In 2024, Leah Gilliam, MD wrote 3,066 Medicare Part D claims totaling $246K in drug costs for 124 beneficiaries.
Where is Leah Gilliam, MD located? ▼
Leah Gilliam, MD is located at 83 S MAIN ST, Lexington, TN, 38351. Phone: (731) 614-7957.
What is Leah Gilliam, MD's NPI number? ▼
Leah Gilliam, MD's National Provider Identifier (NPI) is 1891037875, issued on 03/18/2013.
Does Leah Gilliam, MD prescribe opioids? ▼
Yes, Leah Gilliam, MD had 46 opioid claims in 2024 with an opioid prescribing rate of 1.5%.
How many Family Medicine Physician providers are there in the US? ▼
There are 150,125 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,519 Medicare Part D claims per year.
What drugs does Leah Gilliam, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Leah Gilliam, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Leah Gilliam, MD accept Medicare? ▼
Leah Gilliam, MD appears in CMS Medicare data with 3,066 Part D claims and 124 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Leah Gilliam, MD's credentials? ▼
Leah Gilliam, MD's NPI is 1891037875 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 (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.