Marissa Baltus, MD
NPI 1942308796 · Internal Medicine Physician · Burlington, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Baltus, MD is a Internal Medicine Physician provider in Burlington, MA (NPI 1942308796).
Provider details
- NPI number
- 1942308796
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 74778 (MA)
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
625 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 227 | $104 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 187 | $18 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 144 | $70 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians andG0180 | 19 | $60 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 18 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 728 | 242 |
| Amlodipine Besylate | 358 | 131 |
| Lisinopril | 264 | 94 |
| Levothyroxine Sodium | 174 | 59 |
| Losartan Potassium | 156 | 65 |
| Omeprazole | 147 | 57 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2021-04-15
- Certified
- 2021-04-15
Frequently asked questions
- What is Marissa Baltus's NPI number?
- Marissa Baltus's National Provider Identifier (NPI) is 1942308796, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Baltus's specialty?
- Marissa Baltus is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa Baltus located?
- Marissa Baltus's practice location on file with NPPES is 67 S Bedford St Ste 202e, Burlington, MA 01803-5141.
- What is Marissa Baltus's phone number?
- The practice phone number listed in the NPPES registry for Marissa Baltus is (781) 744-7000.
- Does Marissa Baltus accept Medicare?
- Marissa Baltus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Baltus's NPI active?
- Yes — Marissa Baltus's NPI (1942308796) is active in the NPPES registry as of the last update on 2021-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.