Physician Profile
Unclaimed ProfileAbout HASSELFELD
Brian Hasselfeld, M.D. is a healthcare provider in Baltimore, MD specializing in internal medicine. Brian trained at Tulane University School of Medicine, graduating in 2015. Brian is also listed as specializing in student in an organized health care education program. According to Medicare claims data, Brian cared for 78 Medicare patients across 108 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
- (410) 522-9940
- Email not available
Practice Locations
1501 S CLINTON ST STE 200
Baltimore, MD 21224
Procedures Most Often Billed to Medicare
108 services · 78 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
41 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
28 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
21 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
18 |
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.
Related specialists at this location 3
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.
Other internal medicines in Baltimore 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Tulane University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2015 at Tulane University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in MD who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Hasselfeld?
Dr. Hasselfeld is an internal medicine in Baltimore, MD. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Hasselfeld's address?
Dr. Hasselfeld is listed at 1501 S CLINTON ST STE 200, Baltimore, MD 21224. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Hasselfeld?
The number on file is (410) 522-9940. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Hasselfeld's NPI number?
Dr. Hasselfeld's National Provider Identifier is 1700270360. 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 Dr. Hasselfeld train?
Dr. Hasselfeld attended Tulane University School of Medicine, graduating in 2015. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Hasselfeld been practicing?
Dr. Hasselfeld has 11 years experience. Calculated from a graduation year of 2015, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Hasselfeld perform?
According to Medicare billing data, Dr. Hasselfeld performs procedures including insertion of needle into vein for collection of blood sample, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Hasselfeld confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hasselfeld. 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.