Louis Littman, M.D., PH. D.
NPI 1790906733 · Psychiatry Physician · Philadelphia, PA
Louis Littman, M.D., PH. D. is a Psychiatry Physician provider in Philadelphia, PA (NPI 1790906733).
Provider details
- NPI number
- 1790906733
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH. D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD417898 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Clonazepam | 48 |
| Propranolol Hcl | 47 |
| Lorazepam | 17 |
| Bupropion Hclbrand: Bupropion Xl | 16 |
| Sertraline Hcl | 16 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 15 |
| Duloxetine Hcl | 15 |
| Escitalopram Oxalate | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$130 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Louis Littman's NPI number?
- Louis Littman's National Provider Identifier (NPI) is 1790906733, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Littman's specialty?
- Louis Littman is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Littman located?
- Louis Littman's practice location on file with NPPES is 1420 Walnut Street, Philadelphia, PA 19102.
- What is Louis Littman's phone number?
- The practice phone number listed in the NPPES registry for Louis Littman is (215) 735-4888.
- Is Louis Littman's NPI active?
- Yes — Louis Littman's NPI (1790906733) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.