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Active NPI 1952343162 Individual Practitioner Male Practitioner

David P Terwilliger , PA

Physician Assistant • Portland, ME

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

David Terwilliger, PA is a certified Physician Assistant practicing in Portland, ME. With approximately 28 years of clinical experience since completing medical education in 1998, David Terwilliger delivers high-quality medical care to the local community at 144 STATE ST.

David Terwilliger is affiliated with Mainehealth and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, initial hospital care with moderate level of medical decision making, if using time, at least, 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

144 State St

Portland, ME 041013776

Telephone 2078793000
Associated Practice Facility / Clinic
🏢 Maine Anesthesiology Facility NPI 1992723340

Medicare Profile & Education

Medical School

Other

Graduation Year

1998

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Portland, ME

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
28 Yrs +17.3 yrs vs City Avg
City Avg: 10.7 Yrs
State Avg: 13.7 Yrs
Regional Practice Density
243 Specialists

Practicing in Portland, ME (992 Statewide)

Telehealth Adoption Rate
7.4% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
63.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Terwilliger (28 Years) 28 Yrs
Portland Specialty Average (10.7 Years) 10.7 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
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
23 16 $244.26 $101.96
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
20 14 $169.70 $67.64
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
17 17 $447.94 $149.01

Medical Specialties & State Licenses

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License ME PA-581

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Hospital & Practice Group Affiliations

Mainehealth

22 Bramhall St, Portland, ME 041023134

Phone: 2078859905

Practice Associates & Co-Workers

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

40 Associated Practitioners
Rhonda Benner , LCSW

Social Worker - Clinical

NPI 1013039858

Licensed Clinical Social Worker

Dr. David Polisner , MD

Internal Medicine

NPI 1013080852

Doctor of Medicine (M.D.)

Dr. Brian Moore , MD

Internal Medicine

NPI 1023051521

Doctor of Medicine (M.D.)

Katherine Mercedes

Nurse Anesthetist, Certified Registered

NPI 1023430618
Danielle Wood , PA-C

Physician Assistant

NPI 1033523600

Physician Assistant (Certified)

Dr. Francisco Calles Garcia , MD

Family Medicine - Geriatric Medicine

NPI 1033585203

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events
NPI Profile Active July 26, 2013

NPI status registered as active in NPPES database

📍
Updated Practice Location July 26, 2013

Registered at 144 STATE ST, PORTLAND, ME 041013776 (Tel: 2078793000)

📍
Updated Business Mailing Address July 26, 2013

Registered at 144 STATE ST, PORTLAND, ME 041013776 (Tel: 2078793000)

👤
Provider Name / Credentials Updated July 26, 2013

Recorded as DAVID TERWILLIGER, PA

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 26, 2013

Physician Assistant (License #PA-581 in ME)

🟢
Initial NPI Registration & Enumeration June 12, 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: 1952343162
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 12, 2006
Last Update: July 26, 2013
Sole Proprietor: No

Mailing Address

144 State St

Portland, ME 041013776

Phone: 2078793000

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.