Physician Profile
Unclaimed ProfileAbout ERMANN
Based in Boston, MA, Joerg Ermann, MD is listed in the NPI registry under rheumatology. According to Medicare claims data, Joerg cared for 134 Medicare patients across 190 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (617) 732-5325
- Email not available
Practice Locations
45 FRANCIS ST
Boston, MA 02115
Procedures Most Often Billed to Medicare
190 services · 134 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
95 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
57 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
22 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
16 |
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 rheumatology specialists at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 23 related providers in 3 groups
Other rheumatology specialists in Boston 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1994 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Ermann's specialty?
Dr. Ermann is a rheumatology in Boston, MA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “RHEUMATOLOGY”.
NPI registry
Where can I find Dr. Ermann?
Dr. Ermann is listed at 45 FRANCIS ST, Boston, MA 02115. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Ermann?
The number on file is (617) 732-5325. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Ermann's NPI number?
Dr. Ermann's National Provider Identifier is 1629197736. 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
What is Dr. Ermann's medical education?
Dr. Ermann attended Other, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Ermann been practicing?
Dr. Ermann has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Ermann known for?
According to Medicare billing data, Dr. Ermann 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
Has Dr. Ermann confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ermann. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.