Active NPI 1538144647 Individual Practitioner Male Practitioner

Dr. Jonathan E Efron , MD

Surgery • Baltimore, MD

Professional Overview & Biography Verified Profile Summary

Dr. Jonathan Efron, MD is a registered healthcare professional specializing in Surgery in Baltimore, MD. Practice services are available at 4940 EASTERN AVE under active NPI credentials.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, follow-up hospital inpatient care per day. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

4940 Eastern Ave

Baltimore, MD 212242735

Telephone 4105500100

Associated Practice Facility / Clinic

🏢 Johns Hopkins University Facility NPI 1922008549

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Baltimore, MD

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 22.8 Yrs

State Avg: 28.6 Yrs

Regional Practice Density

266 Specialists

Practicing in Baltimore, MD (717 Statewide)

Telehealth Adoption Rate

12.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

64.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2023)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	29	27	$188.41	$69.96
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	20	20	$408.00	$141.67

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	62	43	$158.00	$69.79
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	22	22	$408.00	$145.28

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	64	41	$158.00	$71.53
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$408.00	$132.03

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	45	35	$158.00	$55.58
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$408.00	$134.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	71	50	$158.00	$54.18
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$408.00	$138.67

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	104	68	$158.00	$53.56
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$408.00	$137.48

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	85	65	$157.63	$53.21
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	54	37	$78.00	$26.88
99231 Follow-up hospital inpatient care per day, typically 15 minutes	34	21	$121.00	$41.31
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	33	33	$411.79	$133.18
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	20	20	$239.00	$81.15
45330 Diagnostic exam of lower portion of large bowel using a flexible endoscope	14	12	$210.00	$61.98
44160 Partial removal of small and large bowel with attachment of small and large bowel	11	11	$4012.00	$1269.56

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License MD D69531

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Colon & Rectal Surgery

NUCC Taxonomy Code: 208C00000X

State License AZ 33553

A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

418309600 (MD)

Medicaid State Provider ID

912742 (AZ)

Commercial Insurance / Payer ID Railroad Medicare

P00217762 (AZ)

Commercial Insurance / Payer ID Triwest

86080015085259A982 (AZ)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners

Dr. Derek Mason , MD, MPH

Student in an Organized Health Care Education/Training Program

NPI 1003550633

Doctor of Medicine (M.D.), Master of Public Health

Dr. Bruce Gibson , MD

Surgery

NPI 1003822784

Doctor of Medicine (M.D.)

Dr. Sheila Hofert , MD

Pediatrics

NPI 1013082049

Doctor of Medicine (M.D.)

Carolyn Kwon

Radiology - Diagnostic Radiology

NPI 1013336072

Dominick Tumacder , PA-C

Physician Assistant

NPI 1013604545

Physician Assistant (Certified)

Sarah Jazzar

Nurse Anesthetist, Certified Registered

NPI 1023714219

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

7 Historical Events

✅

NPI Profile Active February 10, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location February 10, 2014

Registered at 4940 EASTERN AVE, BALTIMORE, MD 212242735 (Tel: 4105500100)

📍

Updated Business Mailing Address February 10, 2014

Registered at PO BOX 64563, BALTIMORE, MD 212644563

👤

Provider Name / Credentials Updated February 10, 2014

Recorded as JONATHAN EFRON, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 10, 2014

Surgery (License #D69531 in MD)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 10, 2014

Colon & Rectal Surgery (License #33553 in AZ)

🟢

Initial NPI Registration & Enumeration December 12, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1538144647

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: December 12, 2005

Last Update: February 10, 2014

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 64563

Baltimore, MD 212644563

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.