Active NPI 1447364633 Individual Practitioner Male Practitioner

Dr. Jonathan Keffer , MD

General Practice • Ithaca, NY

Professional Overview & Biography Verified Profile Summary

Dr. Jonathan Keffer, MD is a registered healthcare professional specializing in General Practice in Ithaca, NY. Practice services are available at 110 HO PLZ under active NPI credentials.

Frequently performed procedures and clinical services include detection test by immunoassay technique for severe acute respiratory syndrome coronavirus, established patient outpatient office visit, new patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

110 Ho Plz

Ithaca, NY 148533102

Telephone 6072555155

Associated Practice Facility / Clinic

🏢 Cornell University Facility NPI 1073584926

Specialty Benchmarks & Practice Insights

Comparative analytics for General Practice in Ithaca, NY

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 10.5 Yrs

State Avg: 30.3 Yrs

Regional Practice Density

1 Specialists

Practicing in Ithaca, NY (818 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

52.0% 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 (2022)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	61	61	$98.36	$34.32
99213 Established patient office or other outpatient visit, typically 15 minutes	40	40	$208.80	$104.54
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	24	24	$123.00	$67.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	105	103	$100.00	$35.33
99213 Established patient office or other outpatient visit, typically 15 minutes	50	49	$208.59	$107.46
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	31	31	$309.21	$132.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	24	$306.49	$152.03
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	15	15	$123.84	$66.28
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$468.26	$197.73

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	69	69	$18.91	$3.00
99213 Established patient office or other outpatient visit, typically 15 minutes	66	66	$210.34	$88.52
99202 New patient office or other outpatient visit, typically 20 minutes	46	46	$216.71	$91.29
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	36	36	$312.68	$127.83
87804 Detection test by immunoassay with direct visual observation for influenza virus	33	17	$74.25	$16.28
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	32	31	$307.38	$127.72
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	30	30	$127.40	$54.71
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	29	29	$100.00	$35.33
87880 Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	14	14	$74.50	$16.27
71046 X-ray of chest, 2 views	13	13	$110.07	$39.06

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	49	49	$210.60	$85.35
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	45	45	$314.67	$125.12
87804 Detection test by immunoassay with direct visual observation for influenza virus	35	18	$74.25	$16.22
71046 X-ray of chest, 2 views	33	33	$110.07	$37.11
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	32	32	$308.80	$124.62
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$474.24	$188.52
81003 Automated urinalysis test	13	13	$19.13	$2.44
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	12	12	$127.62	$52.41

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	38	38	$214.36	$82.00
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	36	36	$307.38	$121.97
87804 Detection test by immunoassay with direct visual observation for influenza virus	32	16	$74.25	$16.22
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	24	23	$133.39	$50.27
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	24	24	$312.68	$123.49
71046 X-ray of chest, 2 views	15	15	$110.07	$35.30
87880 Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	12	12	$74.50	$16.20
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	12	12	$471.28	$186.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	62	62	$209.88	$82.67
87804 Detection test by immunoassay with direct visual observation for influenza virus	54	27	$50.93	$11.75
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	51	51	$306.42	$121.32
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	49	49	$317.26	$123.25
71020 X-ray of chest, 2 views, front and side	42	40	$82.54	$32.23
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	28	28	$474.49	$186.51
87880 Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	19	19	$61.39	$11.75
81003 Automated urinalysis test	18	18	$14.67	$3.02

Medical Specialties & State Licenses

CMS Verified: 2025-08-31

General Practice Primary Specialty

NUCC Taxonomy Code: 208D00000X

State License NY 228331

A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.

Additional State Medicaid & Healthcare Payer Identifiers

Commercial Insurance / Payer ID 228331

LICENSE NUMBER (NY)

Practice Associates & Co-Workers

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

37 Associated Practitioners

Randy Patterson

Psychologist

NPI 1013424803

Dr. Genel Gronkowski , PhD

Psychologist - Counseling

NPI 1023812088

Doctor of Philosophy (Ph.D.)

Yudelka Ivory , NP

Nurse Practitioner - Family

NPI 1144661570

Nurse Practitioner

Deborah Mitchell

Registered Nurse

NPI 1154828200

Dr. Francesca Decker , MD

Family Medicine

NPI 1205125416

Doctor of Medicine (M.D.)

Marie Davis

Registered Nurse

NPI 1245736503

Career & Practice History Timeline

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

11 Historical Events

📍

Updated Practice Location August 31, 2025

Registered at 110 HO PLZ, ITHACA, NY 148533102 (Tel: 6072555155)

📍

Updated Business Mailing Address August 31, 2025

Registered at 110 HO PLZ, ITHACA, NY 148533102 (Tel: 6072555155)

📍

Updated Practice Location July 25, 2025

Registered at 1081 KRAFT RD, ITHACA, NY 148509575 (Tel: 9176975068)

📍

Updated Business Mailing Address July 25, 2025

Registered at 1081 KRAFT RD, ITHACA, NY 148509575 (Tel: 9176975068)

👤

Provider Name / Credentials Updated July 25, 2025

Recorded as JONATHAN KEFFER, MD

✅

NPI Profile Active October 31, 2008

NPI status registered as active in NPPES database

📍

Updated Practice Location October 31, 2008

Registered at 280 HENRY ST, NEW YORK, NY 100024816 (Tel: 2122278401)

📍

Updated Business Mailing Address October 31, 2008

Registered at 280 HENRY ST, NEW YORK, NY 100024816 (Tel: 2122278401)

👤

Provider Name / Credentials Updated October 31, 2008

Recorded as JONATHAN WEINSTEIN, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 31, 2008

General Practice (License #228331 in NY)

🟢

Initial NPI Registration & Enumeration August 18, 2006

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: 1447364633

Entity Type:

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

Enumeration Date: August 18, 2006

Last Update: August 31, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

110 Ho Plz

Ithaca, NY 148533102

Phone: 6072555155

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.