Active NPI 1306046180 Individual Practitioner Male Practitioner

Dr. Jonathan Karnes , MD

Dermatology • Augusta, ME

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Jonathan Karnes, MD is a certified Dermatology practicing in Augusta, ME. With approximately 19 years of clinical experience since completing medical education in 2007, Dr. Karnes delivers high-quality medical care to the local community at 6 E CHESTNUT ST.

Dr. Karnes is affiliated with Mainegeneral Medical Center and accepts Medicare assignment.

Frequently performed procedures and clinical services include destruction of precancer skin growth, 2-14 growths, established patient outpatient office visit, destruction of skin growth. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

6 E Chestnut St

Augusta, ME 043305758

Telephone 2076236680

Fax 2076236609

Associated Practice Facility / Clinic

🏢 Kennebec Gastrointestinal Assoc. Facility NPI 1942214234

Medicare Profile & Education

Medical School

Other

Graduation Year

2007

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Dermatology in Augusta, ME

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

19 Yrs -3.7 yrs vs City Avg

City Avg: 22.7 Yrs

State Avg: 22.6 Yrs

Regional Practice Density

3 Specialists

Practicing in Augusta, ME (60 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

34.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Karnes (19 Years) 19 Yrs

Augusta Specialty Average (22.7 Years) 22.7 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
17003 Destruction of precancer skin growth, 2-14 growths	522	98	$11.00	$1.90
99213 Established patient office or other outpatient visit, typically 15 minutes	337	254	$69.44	$61.31
17000 Destruction of skin growth	221	155	$82.43	$44.53
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	129	101	$103.74	$90.81
17110 Destruction of up to 14 skin growths	95	79	$100.54	$63.20
11102 Tangential biopsy of single skin lesion	54	52	$59.57	$24.78
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	17	17	$31.00	$15.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	389	89	$11.00	$1.94
99213 Established patient office or other outpatient visit, typically 15 minutes	369	276	$72.73	$61.89
17000 Destruction of skin growth	170	133	$82.12	$44.51
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	101	77	$109.67	$92.83
17110 Destruction of up to 14 skin growths	92	79	$102.16	$61.42
11102 Tangential biopsy of single skin lesion	53	52	$59.00	$29.67
11103 Biopsy of related skin growth, each additional growth	19	11	$95.00	$20.18

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	545	113	$11.00	$2.08
99213 Established patient office or other outpatient visit, typically 15 minutes	379	274	$72.47	$63.73
17000 Destruction of skin growth	220	166	$82.73	$45.52
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	107	85	$107.84	$94.03
17110 Destruction of up to 14 skin growths	90	77	$102.11	$61.12
11102 Tangential biopsy of single skin lesion	68	60	$61.79	$29.68
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	21	21	$107.00	$79.26
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	15	14	$602.00	$129.46
11103 Biopsy of related skin growth, each additional growth	15	13	$95.00	$20.68
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$180.00	$128.37

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	582	106	$11.00	$2.04
99213 Established patient office or other outpatient visit, typically 15 minutes	360	281	$72.96	$65.43
17000 Destruction of skin growth	200	156	$82.90	$45.19
17110 Destruction of up to 14 skin growths	94	85	$102.02	$61.25
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	73	64	$107.00	$96.96
11102 Tangential biopsy of single skin lesion	72	67	$61.64	$28.77
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	17	17	$107.00	$81.31
11103 Biopsy of related skin growth, each additional growth	17	14	$95.00	$21.36
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	11	11	$180.00	$132.51

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	674	136	$11.00	$2.12
99213 Established patient office or other outpatient visit, typically 15 minutes	265	220	$79.28	$50.26
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	254	223	$107.00	$77.73
17000 Destruction of skin growth	216	171	$84.61	$46.07
17110 Destruction of up to 14 skin growths	95	85	$113.58	$63.79
11102 Tangential biopsy of single skin lesion	64	62	$60.11	$30.68
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	12	12	$182.50	$25.08
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	11	11	$602.00	$127.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	757	150	$11.00	$2.34
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	400	286	$107.22	$76.71
99213 Established patient office or other outpatient visit, typically 15 minutes	343	282	$80.97	$49.55
17000 Destruction of skin growth	296	232	$120.29	$46.27
17110 Destruction of up to 14 skin growths	123	108	$201.40	$64.29
11102 Tangential biopsy of single skin lesion	93	90	$45.80	$30.82
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	22	22	$145.00	$24.78
11103 Biopsy of related skin growth, each additional growth	21	13	$24.00	$22.41
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	16	16	$602.00	$141.00
11104 Punch biopsy, first skin growth	11	11	$52.00	$44.21

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	645	158	$13.23	$2.36
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	441	301	$107.41	$75.87
99213 Established patient office or other outpatient visit, typically 15 minutes	316	255	$103.32	$49.54
17000 Destruction of skin growth	279	210	$139.87	$45.55
17110 Destruction of up to 14 skin growths	115	94	$207.35	$65.42
11100 Biopsy of single growth of skin and/or tissue	97	92	$192.62	$36.43
11101 Biopsy of each additional growth of skin and/or tissue	40	25	$62.00	$24.11
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	29	29	$238.00	$73.58
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	25	25	$169.72	$24.53
17004 Destruction of precancer skin growth, 15 or more growths	17	15	$327.00	$95.44
11642 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	13	13	$516.00	$115.37

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	817	155	$14.52	$2.29
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	471	311	$103.10	$75.13
99213 Established patient office or other outpatient visit, typically 15 minutes	368	286	$97.07	$48.69
17000 Destruction of skin growth	305	219	$156.12	$46.11
11100 Biopsy of single growth of skin and/or tissue	115	107	$198.06	$37.33
17110 Destruction of up to 14 skin growths	104	81	$211.83	$64.51
11101 Biopsy of each additional growth of skin and/or tissue	31	28	$62.00	$23.99
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	31	31	$147.52	$24.49
11642 Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm	18	17	$537.11	$117.49
17004 Destruction of precancer skin growth, 15 or more growths	15	11	$327.00	$95.13
12052 Repair of wound (2.6 to 5.0 centimeters) of face, ears, eyelids, nose, lips, and/or mouth	14	14	$587.00	$174.73

Medical Specialties & State Licenses

CMS Verified: 2026-08-03

Dermatology Primary Specialty

NUCC Taxonomy Code: 207N00000X

State License ME MD19164

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

Family Medicine

NUCC Taxonomy Code: 207Q00000X

State License ME MD19164

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

432680199 (ME)

Commercial Insurance / Payer ID Resident-No Prov #

NONE (ME)

Hospital & Practice Group Affiliations

Mainegeneral Medical Center

149 N St, Waterville, ME 04901

Phone: 2078721000

Practice Associates & Co-Workers

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

3 Associated Practitioners

Dr. Joshua Sparling , MD

Dermatology

NPI 1245216316

Doctor of Medicine (M.D.)

Dr. Dan Filitis , MD

Dermatology - MOHS-Micrographic Surgery

NPI 1952747784

Doctor of Medicine (M.D.)

Dr. Jill Colvin , MD

Dermatology

NPI 1992714042

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

10 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 03, 2026

Dermatology (License #MD19164 in ME)

📍

Updated Practice Location May 31, 2019

Registered at 6 E CHESTNUT ST, AUGUSTA, ME 043305758 (Tel: 2076236680)

📍

Updated Business Mailing Address May 31, 2019

Registered at 6 E CHESTNUT ST, AUGUSTA, ME 043305758 (Tel: 2076236680)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 31, 2019

Dermatology (License #N7441 in TX)

✅

NPI Profile Active February 25, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location February 25, 2015

Registered at 55 MIDDLE ST, AUGUSTA, ME 043305728 (Tel: 2076236680)

📍

Updated Business Mailing Address February 25, 2015

Registered at 55 MIDDLE ST, AUGUSTA, ME 043305728 (Tel: 2076236680)

👤

Provider Name / Credentials Updated February 25, 2015

Recorded as JONATHAN KARNES, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 25, 2015

Dermatology (License #MD19164 in ME)

🟢

Initial NPI Registration & Enumeration July 20, 2007

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: 1306046180

Entity Type:

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

Enumeration Date: July 20, 2007

Last Update: August 03, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

6 E Chestnut St

Augusta, ME 043305758

Phone: 2076236680

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.