Provider Profile
Marissa K. Gruenbaum, PA-C
Unclaimed ProfileAbout Marissa Gruenbaum
Marissa K. Gruenbaum, PA-C is a physician assistant practicing in Gahanna, OH. Medicare claims data shows Marissa provided 187 services to 147 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg, and residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes. This provider record is associated with NPI 1811543861.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (614) 545-7900
- Email not available
Practice Locations
605 CRESCENT PL
Gahanna, OH 43230
Procedures Most Often Billed to Medicare
187 services · 147 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg | Drug given | J0702 |
38 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
47 | As often as other peers in Physician Assistant |
| Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes | Office visit | 99348 |
28 | Less often than most peers in Physician Assistant |
| Residence visit for new patient with low level of medical decision making, per day, if using time, at least 30 minutes | Office visit | 99342 |
25 | As often as other peers in Physician Assistant |
| Urinalysis, manual test | Lab test | 81002 |
23 | As often as other peers in Physician Assistant |
| Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99349 |
15 | Less often than most peers in Physician Assistant |
| Residence visit for new patient with moderate level of medical decision making, per day, if using time, at least 60 minutes | Office visit | 99344 |
11 | Less often than most peers in Physician Assistant |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other physician assistants at this location 8
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What kind of doctor is Marissa K. Gruenbaum?
Marissa K. Gruenbaum is a physician assistant in Gahanna, OH. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Marissa K. Gruenbaum's address?
Marissa K. Gruenbaum is listed at 605 Crescent Pl, Gahanna, OH 43230. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Marissa K. Gruenbaum?
The number on file is (614) 545-7900. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Marissa K. Gruenbaum?
Marissa K. Gruenbaum's National Provider Identifier is 1811543861. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Marissa K. Gruenbaum train?
Marissa K. Gruenbaum attended Other, graduating in 2018. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Marissa K. Gruenbaum have?
Marissa K. Gruenbaum has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.
CMS public data
What procedures does Marissa K. Gruenbaum perform?
According to Medicare billing data, Marissa K. Gruenbaum the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Marissa K. Gruenbaum's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Marissa K. Gruenbaum. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.