Deactivated NPI 1205824554 Deactivated / Inactive NPI Male Practitioner

Dr. Thomas N Decker , MD

Internal Medicine • Dover, NH

⚠️

Notice of NPI Deactivation & Inactive Practice Status

According to official public domain records published by CMS (Centers for Medicare & Medicaid Services) in the National Provider Identifier (NPPES) Registry, Dr. Thomas Decker has officially deactivated this NPI record and ceased active healthcare practice.

Registration / Start Date October 11, 2005

NPI Deactivation Date February 26, 2026

Total Practice Duration ~21 Years of Practice (2005 – 2026)

Professional Overview & Biography Verified Profile Summary

Dr. Thomas Decker, MD was a registered Internal Medicine practicing in Dover, NH. Throughout an active medical career spanning 21 years, Dr. Decker provided care at the practice location at 10 MEMBERS WAY until profile deactivation on 2026-02-26.

Historical Medicare Part B clinical services included established patient outpatient office visit, coronavirus vaccine 13, physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and. Public procedure reimbursement records and service volume details are provided below for historical transparency.

Practice Location & Contact Primary Location

Practice Address

10 Members Way
Suite 302

Dover, NH 038205933

Telephone 6037423664

Fax 6037429863

Associated Practice Facility / Clinic

🏢 Wentworth Douglass Hospital Facility NPI 1235605429

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Dover, NH

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 27.5 Yrs

State Avg: 25.3 Yrs

Regional Practice Density

26 Specialists

Practicing in Dover, NH (699 Statewide)

Telehealth Adoption Rate

50.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

60.4% 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 (2023)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	313	284	$377.00	$128.43
99213 Established patient office or other outpatient visit, typically 15 minutes	110	104	$268.00	$90.44
91312 Coronavirus vaccine 13	71	71	$0.01	$0.01
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	56	50	$169.00	$52.60
0121A Adm sarscv2 bvl 30mcg/.3ml 1	44	44	$75.00	$41.22
G0009 Administration of pneumococcal vaccine	29	29	$61.07	$30.91
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	29	29	$521.75	$280.05
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	28	17	$130.00	$41.80
0124A Fee covid-19 vac 13 res	27	27	$75.00	$41.22
99443 Telephone medical discussion with physician, 21-30 minutes	26	25	$377.00	$127.93
99495 Transitional care management services for problem of at least moderate complexity	19	19	$608.00	$205.23
G0008 Administration of influenza virus vaccine	11	11	$44.45	$30.91

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	839	566	$354.76	$130.20
99213 Established patient office or other outpatient visit, typically 15 minutes	249	205	$247.85	$92.52
G0008 Administration of influenza virus vaccine	143	142	$44.00	$30.17
90662 Influenza vaccine split virus, preservative free	136	135	$31.76	$31.15
91312 Coronavirus vaccine 13	69	69	$0.01	$0.01
0124A Fee covid-19 vac 13 res	69	69	$75.00	$39.89
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	61	55	$170.00	$53.97
99495 Transitional care management services for problem of at least moderate complexity	50	48	$594.32	$206.56
G0009 Administration of pneumococcal vaccine	46	46	$59.11	$30.36
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	39	37	$27.00	$6.35
0054A Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, tris-sucrose formulation; booster dose	36	36	$75.00	$40.25
99443 Telephone medical discussion with physician, 21-30 minutes	33	31	$352.45	$130.36
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	27	27	$510.89	$278.05
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	14	14	$230.00	$132.99
83036 Hemoglobin A1C level	13	13	$33.08	$9.61
99202 New patient office or other outpatient visit, typically 20 minutes	11	11	$242.00	$74.51
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$339.73	$114.94

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	903	599	$328.51	$132.82
99213 Established patient office or other outpatient visit, typically 15 minutes	207	172	$227.19	$93.53
G0008 Administration of influenza virus vaccine	161	161	$44.00	$17.48
90662 Influenza vaccine split virus, preservative free	157	157	$32.00	$32.00
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	61	52	$254.98	$54.32
99495 Transitional care management services for problem of at least moderate complexity	60	53	$489.25	$211.46
G0009 Administration of pneumococcal vaccine	40	40	$64.90	$17.48
99443 Telephone medical discussion with physician, 21-30 minutes	37	31	$289.11	$133.37
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	34	34	$230.00	$125.21
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	32	19	$201.75	$42.34
93000 Routine ekg using at least 12 leads including interpretation and report	25	25	$132.72	$15.26
99442 Telephone medical discussion with physician, 11-20 minutes	18	17	$193.00	$94.15
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	17	17	$327.47	$115.32
83036 Hemoglobin A1C level	11	11	$38.09	$9.71

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	784	554	$312.42	$113.38
99213 Established patient office or other outpatient visit, typically 15 minutes	229	185	$217.08	$77.81
G0008 Administration of influenza virus vaccine	175	173	$44.00	$17.41
90662 Influenza vaccine split virus, preservative free	165	163	$32.00	$31.97
99442 Telephone medical discussion with physician, 11-20 minutes	123	109	$185.72	$78.03
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	56	42	$269.36	$55.74
G0009 Administration of pneumococcal vaccine	45	45	$68.13	$17.39
99443 Telephone medical discussion with physician, 21-30 minutes	44	37	$275.25	$113.47
99495 Transitional care management services for problem of at least moderate complexity	41	38	$444.15	$185.83
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	27	27	$226.33	$119.33
93000 Routine ekg using at least 12 leads including interpretation and report	27	25	$131.56	$17.90
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	20	11	$203.90	$42.81
90670 Pneumococcal vaccine for injection into muscle	18	18	$430.00	$226.84
99202 New patient office or other outpatient visit, typically 20 minutes	16	16	$221.81	$79.45
82274 Stool analysis for blood, by fecal hemoglobin determination by immunoassay	14	13	$103.50	$15.85
99441 Telephone medical discussion with physician, 5-10 minutes	12	12	$112.67	$47.46
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	11	11	$24.00	$19.58

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	978	603	$294.27	$112.17
99213 Established patient office or other outpatient visit, typically 15 minutes	404	285	$203.45	$76.78
G0008 Administration of influenza virus vaccine	149	149	$28.58	$17.08
90662 Influenza vaccine split virus, preservative free	143	143	$32.83	$32.17
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	74	59	$256.74	$55.23
85610 Blood test, clotting time	68	17	$19.38	$4.28
99495 Transitional care management services for problem of at least moderate complexity	67	58	$423.28	$169.99
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	60	16	$70.55	$17.38
G0009 Administration of pneumococcal vaccine	54	54	$63.91	$17.08
93000 Routine ekg using at least 12 leads including interpretation and report	45	45	$125.33	$17.76
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	33	22	$196.45	$42.81
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	30	30	$212.90	$109.61
90670 Pneumococcal vaccine for injection into muscle	24	24	$416.25	$209.35
83036 Hemoglobin A1C level	18	17	$43.11	$10.57

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	987	608	$280.58	$109.93
99213 Established patient office or other outpatient visit, typically 15 minutes	358	250	$193.83	$74.73
G0008 Administration of influenza virus vaccine	135	130	$22.00	$21.12
90662 Influenza vaccine split virus, preservative free	96	96	$32.00	$31.36
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	94	79	$248.87	$54.31
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	89	20	$67.44	$20.99
G0009 Administration of pneumococcal vaccine	76	76	$62.04	$21.12
93000 Routine ekg using at least 12 leads including interpretation and report	56	55	$120.71	$17.53
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	52	17	$12.13	$1.93
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	52	32	$189.15	$43.06
99495 Transitional care management services for problem of at least moderate complexity	52	47	$406.62	$168.44
90670 Pneumococcal vaccine for injection into muscle	38	38	$410.63	$197.79
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	38	38	$205.13	$105.59
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	34	19	$109.18	$43.14
90653 Vaccine for influenza for injection into muscle	32	31	$32.00	$31.36
83036 Hemoglobin A1C level	17	17	$41.12	$11.75
99202 New patient office or other outpatient visit, typically 20 minutes	16	16	$197.00	$77.14
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$279.77	$110.82
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous	13	13	$57.15	$19.25
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	12	12	$375.50	$148.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,000	597	$269.00	$108.98
99213 Established patient office or other outpatient visit, typically 15 minutes	349	246	$186.00	$74.35
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	101	21	$65.00	$25.11
G0008 Administration of influenza virus vaccine	101	99	$23.16	$21.70
90653 Vaccine for influenza for injection into muscle	88	88	$32.00	$31.36
85610 Blood test, clotting time	88	14	$17.00	$5.28
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	77	68	$238.00	$54.71
G0009 Administration of pneumococcal vaccine	64	64	$55.09	$26.29
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	60	16	$11.00	$2.75
99495 Transitional care management services for problem of at least moderate complexity	54	48	$392.00	$164.42
93000 Routine ekg using at least 12 leads including interpretation and report	53	52	$116.00	$17.50
90670 Pneumococcal vaccine for injection into muscle	39	39	$345.00	$186.46
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	38	21	$181.00	$42.63
71020 X-ray of chest, 2 views, front and side	30	29	$126.17	$17.87
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	28	28	$362.00	$146.13
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	25	25	$171.00	$95.82
36415 Insertion of needle into vein for collection of blood sample	18	17	$20.00	$2.94
83036 Hemoglobin A1C level	15	14	$39.00	$13.05
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	14	14	$418.00	$168.98
99202 New patient office or other outpatient visit, typically 20 minutes	12	12	$189.00	$76.68
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$268.00	$110.87

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License NH 5976

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Practice Associates & Co-Workers

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

3 Associated Practitioners

Dr. George Hilton , MD

Psychiatry & Neurology - Psychiatry

NPI 1689632549

Doctor of Medicine (M.D.)

Susan Silfen-Katz , PA-C

Physician Assistant

NPI 1760470082

Physician Assistant (Certified)

Heidi Stucker , APRN

Nurse Practitioner - Primary Care

NPI 1891783106

Advanced Practice Registered Nurse

Career & Practice History Timeline

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

17 Historical Events

⚠️

NPI Profile Deactivated February 26, 2026

Record deactivated on February 26, 2026

✅

NPI Profile Active March 17, 2018

NPI status registered as active in NPPES database

📍

Updated Practice Location March 17, 2018

Registered at 10 MEMBERS WAY FL 5, DOVER, NH 038205933 (Tel: 6036096800)

📍

Updated Business Mailing Address March 17, 2018

Registered at 789 CENTRAL AVE, DOVER, NH 038202526 (Tel: 6037423664)

👤

Provider Name / Credentials Updated March 17, 2018

Recorded as THOMAS DECKER, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 17, 2018

Internal Medicine (License #5976 in NH)

✅

NPI Profile Active January 24, 2018

NPI status registered as active in NPPES database

📍

Updated Practice Location January 24, 2018

Registered at 10 MEMBERS WAY FL 5, DOVER, NH 038205933 (Tel: 6036096800)

📍

Updated Business Mailing Address January 24, 2018

Registered at 789 CENTRAL AVE, DOVER, NH 038202526 (Tel: 6037423664)

👤

Provider Name / Credentials Updated January 24, 2018

Recorded as THOMAS DECKER, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 24, 2018

Internal Medicine (License #5976 in NH)

✅

NPI Profile Active January 22, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location January 22, 2014

Registered at 10 MEMBERS WAY, SUITE 302, DOVER, NH 038205933 (Tel: 6037423664)

📍

Updated Business Mailing Address January 22, 2014

Registered at 789 CENTRAL AVE, DOVER, NH 038202526 (Tel: 6037423664)

👤

Provider Name / Credentials Updated January 22, 2014

Recorded as THOMAS DECKER, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 22, 2014

Internal Medicine (License #5976 in NH)

🟢

Initial NPI Registration & Enumeration October 11, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. Thomas Decker. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1205824554

Entity Type:

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

Enumeration Date: October 11, 2005

Last Update: January 22, 2014

Deactivation Date: February 26, 2026

Update or Correct Profile

Mailing Address

789 Central Ave

Dover, NH 038202526

Phone: 6037423664

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.