Margaret Littlejohn, MD
NPI 1649893496 · Ophthalmology Physician · Lubbock, TX
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Littlejohn, MD is a Ophthalmology Physician provider in Lubbock, TX (NPI 1649893496).
Provider details
- NPI number
- 1649893496
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- BP10071115 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
669 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 202 | $119 |
| Established Patient Problem Focused Exam of Visual System92012 | 137 | $84 |
| Imaging of Retina92134 | 86 | $38 |
| New Patient Complete Exam of Visual System92004 | 47 | $141 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 46 | $24 |
| Imaging of Optic Nerve92133 | 29 | $34 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 82 | 52 |
| Prednisolone Acetate | 44 | 31 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 33 | 29 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 29 | 16 |
| Timolol Maleate | 18 | 14 |
| Ketorolac Tromethamine | 16 | 14 |
| Ofloxacin | 15 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$89 across 3 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
Additional practice locations (1)
- 3209 4th St Ste 100Longview, TX 75605-5170Phone: (903) 757-2020Fax: (903) 757-4665
Registry dates
- Enumerated
- 2020-05-27
- Last updated
- 2024-05-23
- Certified
- 2024-05-23
Frequently asked questions
- What is Margaret Littlejohn's NPI number?
- Margaret Littlejohn's National Provider Identifier (NPI) is 1649893496, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Littlejohn's specialty?
- Margaret Littlejohn is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Littlejohn located?
- Margaret Littlejohn's practice location on file with NPPES is 3601 4th St, Lubbock, TX 79430-0002.
- What is Margaret Littlejohn's phone number?
- The practice phone number listed in the NPPES registry for Margaret Littlejohn is (806) 743-6840.
- Does Margaret Littlejohn accept Medicare?
- Margaret Littlejohn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Littlejohn's NPI active?
- Yes — Margaret Littlejohn's NPI (1649893496) is active in the NPPES registry as of the last update on 2024-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.