Physician Profile
Unclaimed ProfileAbout GRUNSEID
Fred Grunseid, M.D. practises internal medicine in Brooklyn, NY. Fred is a 1984 graduate of Icahn School of Medicine at Mount Sinai.
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
Common questions
What does Dr. Grunseid specialise in?
Dr. Grunseid is an internal medicine in Brooklyn, NY. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Grunseid located?
Dr. Grunseid is listed at 1687 RALPH AVE, Brooklyn, NY 11236. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Grunseid's phone number?
The number on file is (718) 251-7191. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Grunseid?
Dr. Grunseid's National Provider Identifier is 1023036613. 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. Grunseid go to medical school?
Dr. Grunseid attended Icahn School of Medicine at Mount Sinai, graduating in 1984. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Grunseid have?
Dr. Grunseid has 42 years experience. Calculated from a graduation year of 1984, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Grunseid do most often?
According to Medicare billing data, Dr. Grunseid performs procedures including insertion of needle into vein for collection of blood sample; reads or performs imaging such as x-ray of chest, 1 view; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and influenza vaccine split virus, preservative free, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Grunseid's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Grunseid. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (718) 251-7191
- Email not available
Practice Locations
1687 RALPH AVE
Brooklyn, NY 11236
Procedures Most Often Billed to Medicare
9,433 services · 5,240 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
1,045 |
| X-ray of chest, 1 view | Imaging | 71045 |
402 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
724 |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
173 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
86 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
51 |
| Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | Drug given | J3420 |
85 |
| Telephone medical discussion with physician, 5-10 minutes | Office visit | 99441 |
1,005 |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
928 |
| Manual urinalysis test with examination using microscope, non-automated | Lab test | 81000 |
813 |
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 internal medicines at this location 2
Same specialty, same street address — most likely the same department or group.
Also at this address 1
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 Brooklyn 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Icahn School of Medicine at Mount Sinai 8
Other providers in the same specialty who trained at the same institution.
Class of 1984 at Icahn School of Medicine at Mount Sinai 7
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 NY who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.