Lisa Diehl
NPI 1326138199 · Internal Medicine Physician · Baton Rouge, LA
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lisa Diehl is a Internal Medicine Physician provider in Baton Rouge, LA (NPI 1326138199).
Provider details
- NPI number
- 1326138199
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
- License
- 10808R (LA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
4,066 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 1,539 | $111 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 943 | $74 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 877 | $46 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 365 | $106 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 342 | $162 |
Typical Medicare-allowed amounts for these services range $46–$162 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 36 | 36 |
| Gabapentin | 33 | 26 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 29 | 29 |
| Methocarbamol | 14 | 14 |
| Tramadol Hcl | 14 | 14 |
| Apixabanbrand: Eliquis | 11 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-13
- Last updated
- 2019-09-12
Frequently asked questions
- What is Lisa Diehl's NPI number?
- Lisa Diehl's National Provider Identifier (NPI) is 1326138199, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lisa Diehl's specialty?
- Lisa Diehl is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lisa Diehl located?
- Lisa Diehl's practice location on file with NPPES is 8595 United Plaza Blvd, Baton Rouge, LA 70809-2251.
- What is Lisa Diehl's phone number?
- The practice phone number listed in the NPPES registry for Lisa Diehl is (985) 635-6943.
- Does Lisa Diehl accept Medicare?
- Lisa Diehl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lisa Diehl's NPI active?
- Yes — Lisa Diehl's NPI (1326138199) is active in the NPPES registry as of the last update on 2019-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.