Frederick M Fellin, MD

Hematology & Oncology

Internal Medicine

Frederick M Fellin is a Hematology & Oncology specialist based in Philadelphia, PA with over 47 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

(215) 955-8874Philadelphia, PA
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

Frederick M Fellin, MD practices as part of a group hematology & oncology specialist practice in Philadelphia, PA. Trained at Jefferson Medical College of Thomas Jefferson University (class of 1979), he has been practicing for over 47 years. Among his Medicare patients, common conditions include hypertension, high cholesterol, and cancer (per CMS data).

1 of 241 Internal Medicine providers in PASee all Internal Medicine in Philadelphia47+ years experienceNPI since 2006

Older · 4847dNPPES updated 2013-02-15 · verify NPI on CMS · Verify license at Pennsylvania State Board of Medicine

Contact & Location

Practice Location

925 Chestnut Street Suite 320a, Philadelphia, PA 19107-5109

CMS Clinical Data

How Does This Doctor Compare?

Opioid Rx

↓ Lower = better

5.49%

Pennsylvania avg: 4.3 · US avg: 5.1

Lower than most doctors nationally(+0.4 pts)

5.49% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.

Generic Rx

↑ Higher = better

67.8%

Pennsylvania avg: 82.8 · US avg: 82.8

Lower than most doctors nationally(-15 pts)

How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.

Medicare Patients

339

Unique beneficiaries

Standard volume

Prescription Recipients

173

Patients prescribed

Prescriptions Written

801

Total claims

Total Medicare drug cost: $3.23M

Percentile rankings compared against 3,764 reporting peers in Pennsylvania.

Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.

Patient Condition Panel

What This Doctor Treats Most

Based on Medicare claims data — here's what patients commonly see this doctor for

Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Cancer.

Hypertension
Higher than avg (+5%)75%

High blood pressure — a leading risk factor for heart disease and stroke

US avg: 70.2%

↑ More patients than average (+5%) — a focus area for this doctor

High Cholesterol
Higher than avg (+5%)75%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↑ More patients than average (+5%) — a focus area for this doctor

Cancer
Higher than avg (+35%)56%

Diseases involving abnormal cell growth with potential to spread to other body parts

US avg: 20.8%

↑ More patients than average (+35%) — a focus area for this doctor

Arthritis
Higher than avg (+1%)50%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↑ More patients than average (+1%) — a focus area for this doctor

Diabetes
Lower than avg (-2%)32%

A condition where the body cannot properly regulate blood sugar levels

US avg: 34.5%

↓ Fewer patients than average (-2%) — less common here

Chronic Kidney Disease
30%

Gradual loss of kidney function over time, often linked to diabetes or hypertension

US avg: 29.6%
Ischemic Heart Disease
Lower than avg (-2%)30%

Reduced blood flow to the heart muscle, commonly known as coronary artery disease

US avg: 31.7%

↓ Fewer patients than average (-2%) — less common here

Mood Disorders
28%

Conditions affecting emotional state, including depression and bipolar disorder

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

Community Context

Social Vulnerability Index: 0.32 / 1.00

Below-average vulnerability

He practices in a community where the CDC measures social vulnerability across socioeconomic status, household composition, racial/ethnic minority status, and housing/transportation factors. A higher index indicates more residents may face barriers accessing care.

Source: CDC/ATSDR Social Vulnerability Index.

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Graduated medical school · 1979

    Sidney Kimmel Medical College at Thomas Jefferson University

  2. 47 years in practice

    Senior practitioner

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Taxonomy: 207RH0003X

Education & Training

Jefferson Medical College of Thomas Jefferson University (Class of 1979)

Virtual Hematology & Oncology Care With Frederick M Fellin

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Frederick M Fellin for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Philadelphia required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.

Frequently Asked Questions

Common questions about Frederick M Fellin

NPI records show Dr. Fellin as active with telehealth listed in Philadelphia, PA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (215) 955-8874.

Verified across 6 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator · HRSA HPSA · CDC SVI. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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