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Active NPI 1356768683 Individual Practitioner Male Practitioner

Dr. Ryan Joseph Longfellow , MD

Anesthesiology • Madison, WI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Ryan Longfellow, MD is a certified Anesthesiology practicing in Madison, WI. With approximately 12 years of clinical experience since graduating from Indiana University School Of Medicine in 2014, Dr. Longfellow delivers high-quality medical care to the local community at 600 HIGHLAND AVE.

Dr. Longfellow is affiliated with University Of Wisconsin Medical Foundation Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include new patient outpatient office visit, anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope, established 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

600 Highland Ave

Madison, WI 537921902

Telephone 6082638100
Fax 6082626247
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Indiana University School Of Medicine

Graduation Year

2014

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiology in Madison, WI

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
12 Yrs -5.6 yrs vs City Avg
City Avg: 17.6 Yrs
State Avg: 23.3 Yrs
Regional Practice Density
283 Specialists

Practicing in Madison, WI (1360 Statewide)

Telehealth Adoption Rate
3.2% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
87.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Longfellow (12 Years) 12 Yrs
Madison Specialty Average (17.6 Years) 17.6 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
32 32 $359.00 $75.46
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope
24 23 $1529.50 $91.88
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
18 18 $535.00 $117.71
99213 Established patient office or other outpatient visit, typically 15 minutes
13 13 $234.00 $61.22

Medical Specialties & State Licenses

CMS Verified: 2025-05-27
Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

State License WI 81042

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Anesthesiology

NUCC Taxonomy Code: 207L00000X

State License IN 01086496A

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Anesthesiology

NUCC Taxonomy Code: 207L00000X

State License AK 143984

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Anesthesiology - Pain Medicine

NUCC Taxonomy Code: 207LP2900X

State License WI 81042

An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.

Hospital & Practice Group Affiliations

University Of Wisconsin Medical Foundation Inc

600 Highland Ave, Madison, WI 537920001

Phone: 6082636400

Secondary Practice Locations

10525 W 124th Ave

Cedar Lake, IN 463039275

Phone: 2198051484

5165 Mccarty Ln

Lafayette, IN 479058764

Phone: 7654488000

Practice Associates & Co-Workers

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

40 Associated Practitioners
NPI 1003173543

Doctor of Medicine (M.D.)

John Henry Harrison

Anesthesiology

NPI 1003236225
Laura Wyatt , AA-C

Anesthesiologist Assistant

NPI 1013358308

AAC

Ashton Mieritz , CRNA

Nurse Anesthetist, Certified Registered

NPI 1013787449

Certified Registered Nurse Anesthetist

NPI 1013983527

Doctor of Medicine (M.D.)

Carlos Anani

Nurse Anesthetist, Certified Registered

NPI 1033003090

Career & Practice History Timeline

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

17 Historical Events
📍
Updated Practice Location May 27, 2025

Registered at 600 HIGHLAND AVE, MADISON, WI 537921902 (Tel: 6082638100)

📍
Updated Business Mailing Address May 27, 2025

Registered at 7974 UW HEALTH CT, MIDDLETON, WI 535625531

📍
Updated Practice Location October 31, 2023

Registered at 10525 W 124TH AVE, CEDAR LAKE, IN 463039275 (Tel: 2198051484)

📍
Updated Business Mailing Address October 31, 2023

Registered at 10525 W 124TH AVE, CEDAR LAKE, IN 463039275

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 13, 2023

Anesthesiology (License #01086496A in IN)

📍
Updated Practice Location December 05, 2022

Registered at 600 HIGHLAND AVE, MADISON, WI 537921902 (Tel: 6082638100)

📍
Updated Business Mailing Address December 05, 2022

Registered at 7974 UW HEALTH CT, MIDDLETON, WI 535625531

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) December 05, 2022

Anesthesiology (License #143984 in AK)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) October 27, 2021

Anesthesiology (License #01086496A in IN)

📍
Updated Business Mailing Address August 20, 2020

Registered at 3300 PROVIDENCE DR STE 207, ANCHORAGE, AK 995084620 (Tel: 9072790555)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 20, 2020

Anesthesiology (License #143984 in AK)

NPI Profile Active April 05, 2016

NPI status registered as active in NPPES database

📍
Updated Practice Location April 05, 2016

Registered at 2001 W 86TH ST, INDIANAPOLIS, IN 462601902 (Tel: 3173382281)

📍
Updated Business Mailing Address April 05, 2016

Registered at 1120 SOUTH DR, STE 204, INDIANAPOLIS, IN 462025135 (Tel: 3172744343)

👤
Provider Name / Credentials Updated April 05, 2016

Recorded as RYAN LONGFELLOW, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 05, 2016

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration March 25, 2014

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1356768683
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 25, 2014
Last Update: May 27, 2025
Sole Proprietor: No

Mailing Address

7974 Uw Health Ct

Middleton, WI 535625531

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.