Physician Profile
Unclaimed ProfileAbout FELLIN
Frederick M Fellin, MD is a healthcare provider in Philadelphia, PA specializing in hematology/oncology. Frederick trained at Jefferson Medical College of Thomas Jefferson University, graduating in 1979. Frederick is also listed as specializing in hematology & oncology. According to Medicare claims data, Frederick cared for 432 Medicare patients across 624 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
- (215) 955-8874
- Email not available
Practice Locations
925 CHESTNUT STREET SUITE 320A
Philadelphia, PA 19107
Procedures Most Often Billed to Medicare
624 services · 432 patients · 10 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
228 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
98 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
83 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
76 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
46 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
23 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
19 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
18 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
17 |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
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 hematology/oncology specialists at this location 1
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 — 24 related providers in 3 groups
Other hematology/oncology specialists in Philadelphia 8
Same specialty, same city.
Trained at Jefferson Medical College of Thomas Jefferson University 8
Other providers in the same specialty who trained at the same institution.
Class of 1979 at Jefferson Medical College of Thomas Jefferson University 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Fellin specialize in?
Dr. Fellin is a hematology/oncology in Philadelphia, PA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “HEMATOLOGY/ONCOLOGY”.
NPI registry
Where is Dr. Fellin located?
Dr. Fellin is listed at 925 CHESTNUT STREET SUITE 320A, Philadelphia, PA 19107. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Fellin's phone number?
The number on file is (215) 955-8874. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Fellin's NPI number?
Dr. Fellin's National Provider Identifier is 1679684476. 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. Fellin go to medical school?
Dr. Fellin attended Jefferson Medical College of Thomas Jefferson University, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Fellin been practicing?
Dr. Fellin has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Fellin do most often?
According to Medicare billing data, Dr. Fellin 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. Fellin confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Fellin. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.