Active NPI 1013981711 Individual Practitioner Male Practitioner

Dr. Mark E. Armstrong , MD

Surgery • Port Matilda, PA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Mark Armstrong, MD is a certified Surgery practicing in Port Matilda, PA. With approximately 38 years of clinical experience since graduating from Temple University School Of Medicine in 1988, Dr. Armstrong delivers high-quality medical care to the local community at 132 ABIGAIL LN.

Dr. Armstrong maintains professional affiliations with Geisinger Clinic, Geisinger-Hm Joint Venture Llc and accepts Medicare assignment.

Frequently performed procedures and clinical services include new patient outpatient office visit, diagnostic examination of the anus using an endoscope, biopsy of large bowel using an endoscope. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

132 Abigail Ln

Port Matilda, PA 168707153

Telephone 8142725011

Fax 8142726531

Associated Practice Facility / Clinic

🏢 Geisinger Lewistown Hospital Facility NPI 1447280797

Medicare Profile & Education

Medical School

Temple University School Of Medicine

Graduation Year

1988

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Port Matilda, PA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

38 Yrs +8.5 yrs vs City Avg

City Avg: 29.5 Yrs

State Avg: 26.1 Yrs

Regional Practice Density

5 Specialists

Practicing in Port Matilda, PA (1976 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

64.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Armstrong (38 Years) 38 Yrs

Port Matilda Specialty Average (29.5 Years) 29.5 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	19	19	$325.00	$105.46
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$493.82	$157.98
46600 Diagnostic examination of the anus using an endoscope	12	11	$226.00	$108.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45380 Biopsy of large bowel using an endoscope	19	19	$1367.32	$126.25
99213 Established patient office or other outpatient visit, typically 15 minutes	18	14	$206.67	$86.36
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$468.82	$159.44
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$314.38	$107.22
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	15	$298.75	$122.19

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	39	35	$195.38	$88.12
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	29	29	$301.79	$106.86
45380 Biopsy of large bowel using an endoscope	16	16	$1388.00	$93.77
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$450.57	$162.51
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	11	11	$2003.00	$231.73

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	46	46	$283.02	$108.86
99213 Established patient office or other outpatient visit, typically 15 minutes	25	22	$179.00	$88.50
45380 Biopsy of large bowel using an endoscope	18	18	$1380.44	$127.28
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	13	13	$2138.77	$250.95
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	12	12	$425.00	$164.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	43	34	$167.81	$72.46
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	38	35	$240.92	$104.36
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	23	23	$355.87	$162.05
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	21	21	$250.86	$105.55
99221 Initial hospital inpatient care per day, typically 30 minutes	17	17	$362.65	$101.61
47562 Removal of gallbladder using an endoscope	15	15	$5018.53	$671.93
45380 Biopsy of large bowel using an endoscope	15	15	$1506.00	$103.35

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	74	57	$150.35	$72.23
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	40	39	$243.45	$104.85
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	27	20	$233.00	$72.52
99221 Initial hospital inpatient care per day, typically 30 minutes	18	18	$363.00	$101.31
45380 Biopsy of large bowel using an endoscope	17	17	$1506.00	$139.87
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$309.00	$162.17
47562 Removal of gallbladder using an endoscope	13	13	$4806.69	$630.71

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	76	60	$148.12	$68.63
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	59	51	$214.49	$103.57
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	21	16	$233.00	$71.79
99221 Initial hospital inpatient care per day, typically 30 minutes	18	18	$363.00	$96.79
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	18	18	$211.89	$100.86
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	12	12	$145.00	$7.82
45380 Biopsy of large bowel using an endoscope	12	12	$1506.00	$126.92

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	65	58	$150.89	$70.46
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	32	30	$195.59	$103.74
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	24	24	$202.46	$104.56
99221 Initial hospital inpatient care per day, typically 30 minutes	17	17	$363.00	$99.62
45380 Biopsy of large bowel using an endoscope	16	16	$1506.00	$145.30
47562 Removal of gallbladder using an endoscope	14	14	$4947.30	$609.47

Medical Specialties & State Licenses

CMS Verified: 2020-07-15

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License PA MD043637L

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

000141751 (PA)

Hospital & Practice Group Affiliations

Geisinger Clinic

100 N Academy Ave, Danville, PA 178229800

Phone: 5702716144

Geisinger Clinic

1020 Thompson St, Jersey Shore, PA 177401729

Phone: 5703981991

Geisinger Clinic

400 Highland Ave, Lewistown, PA 170441167

Phone: 7173639071

Geisinger Clinic

68 Spring St, Lock Haven, PA 177451911

Phone: 8002304564

Geisinger-Hm Joint Venture Llc

955 Bellefonte Ave, Lock Haven, PA 177453033

Phone: 5707487714

Geisinger Clinic

27 Sandy Ln, Lewistown, PA 170441310

Phone: 7172422711

Practice Associates & Co-Workers

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

31 Associated Practitioners

Stephanie Hanlon , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003190224

Certified Registered Nurse Anesthetist

Dr. Stephen Miller , MD

Surgery

NPI 1013122464

Doctor of Medicine (M.D.)

Dr. Mara Modzeski , MD

Otolaryngology

NPI 1053758094

Doctor of Medicine (M.D.)

Carolyn Folmar , PA-C

Physician Assistant

NPI 1083596829

Physician Assistant (Certified)

Dr. Christine Zanghi , MD, PhD

Anesthesiology

NPI 1104068105

Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)

Nivedita Rao

Nurse Anesthetist, Certified Registered

NPI 1114415122

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active July 10, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location July 10, 2014

Registered at 132 ABIGAIL LN, PORT MATILDA, PA 168707153 (Tel: 8142725011)

📍

Updated Business Mailing Address July 10, 2014

Registered at 100 N ACADEMY AVE, DANVILLE, PA 178223034 (Tel: 5702716144)

👤

Provider Name / Credentials Updated July 10, 2014

Recorded as MARK ARMSTRONG, M.D.

🎓

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

Surgery (License #MD043637L in PA)

🟢

Initial NPI Registration & Enumeration February 17, 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: 1013981711

Entity Type:

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

Enumeration Date: February 17, 2006

Last Update: July 15, 2020

Sole Proprietor: No

Update or Correct Profile

Mailing Address

100 N Academy Ave

Danville, PA 178223034

Phone: 5702716144

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.