Doctor profile · Federal record
Dr. Jonna Maas, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Pediatrics Physician · Marshall, MN
- NPI 1699187831
- Accepts Medicare
- 8 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
300 S Bruce St
Marshall, MN 562581934
(507) 532-9661
fax (507) 537-9053 - Additional location
-
420 Delaware Street Se Phillips Wangensteen Building, 14Th Floor, Suite 100B
Minneapolis, MN 55455
(612) 624-0990
fax (612) 625-3238 - Mailing address
-
420 Delaware Street Se Phillips Wangensteen Building, 14Th Floor, Suite 100B
Minneapolis, MN 55455
Credentials & registration
- NPI registered
- May 2014 — 12 yrs on file
- Profile last updated
- October 12, 2018
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Minnesota #61915
- Medicaid
- MN #1699187831
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699187831. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
489
Distinct HCPCS
6
Medicare allowed
$40,743
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 109 | 65 | $116 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 108 | 65 | $77 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 84 | 82 | $8 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 70 | 64 | $169 | |
99239 |
Hospital discharge day management, more than 30 minutes | 61 | 54 | $112 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 57 | 43 | $8 |
In context: peer comparison
Among 5 peers in Marshall Internal Medicine Physician, average services per provider: 75. This provider delivers 6.5× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Jonna Maas's medical specialty?
Dr. Jonna Maas practices Internal Medicine Physician in Marshall, MN.
Where does Dr. Jonna Maas practice?
Dr. Jonna Maas practices at 300 S Bruce St, Marshall, MN 562581934. Office phone: 5075329661.
What is Dr. Jonna Maas's NPI?
Dr. Jonna Maas's National Provider Identifier (NPI) is 1699187831, issued by NPPES.
Does Dr. Jonna Maas accept Medicare assignment?
Yes. Dr. Jonna Maas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jonna Maas commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010). Source: CMS Medicare Physician & Other Practitioners file.