Mark Carlson, MD
NPI 1023008398 · Internal Medicine Physician · Cedar Park, TX
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Carlson, MD is a Internal Medicine Physician provider in Cedar Park, TX (NPI 1023008398).
Provider details
- NPI number
- 1023008398
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- Q2258 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
145 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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 61 | $117 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 58 | $70 |
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 26 | $170 |
Typical Medicare-allowed amounts for these services range $70–$170 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 77 | 13 |
| Levothyroxine Sodium | 71 | 13 |
| Donepezil Hcl | 53 | — |
| Atorvastatin Calcium | 49 | — |
| Amlodipine Besylate | 47 | — |
| Potassium Chloride | 46 | — |
| Gabapentin | 45 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$97 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
Additional practice locations (1)
- 201 S 68th Street PlSuite 200Lincoln, NE 68510-2496Phone: (402) 420-7000Fax: (402) 420-7240
Registry dates
- Enumerated
- 2005-10-26
- Last updated
- 2019-04-16
Frequently asked questions
- What is Mark Carlson's NPI number?
- Mark Carlson's National Provider Identifier (NPI) is 1023008398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Carlson's specialty?
- Mark Carlson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Carlson located?
- Mark Carlson's practice location on file with NPPES is 1905 S Lakeline Blvd Ste 4, Cedar Park, TX 78613.
- What is Mark Carlson's phone number?
- The practice phone number listed in the NPPES registry for Mark Carlson is (512) 553-1921.
- Does Mark Carlson accept Medicare?
- Mark Carlson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Carlson's NPI active?
- Yes — Mark Carlson's NPI (1023008398) is active in the NPPES registry as of the last update on 2019-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.