Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1922049402 Individual Practitioner Male Practitioner

Dr. Gregory K. Johnson , MD

Specialist • Haverhill, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Johnson, MD is a certified Specialist practicing in Haverhill, MA. With approximately 42 years of clinical experience since graduating from Columbia University College Of Physicians And Surgeons in 1984, Dr. Johnson delivers high-quality medical care to the local community at 288 GROVELAND ST.

Dr. Johnson is affiliated with Mass General Brigham Community Physicians Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg, established patient outpatient office visit, aspiration and/or injection of fluid from large joint. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

288 Groveland St

Haverhill, MA 018306669

Telephone 9783733851
Fax 9785216542
Associated Practice Facility / Clinic
🏢 Associates In Orthopedics, Pc Facility NPI 1134166150

Medicare Profile & Education

Medical School

Columbia University College Of Physicians And Surgeons

Graduation Year

1984

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Specialist in Haverhill, MA

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
42 Yrs +3.0 yrs vs City Avg
City Avg: 39.0 Yrs
State Avg: 37.9 Yrs
Regional Practice Density
7 Specialists

Practicing in Haverhill, MA (1181 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
77.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Johnson (42 Years) 42 Yrs
Haverhill Specialty Average (39.0 Years) 39.0 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
J0702 Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg
355 73 $21.00 $6.95
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
173 119 $554.64 $129.38
99213 Established patient office or other outpatient visit, typically 15 minutes
95 74 $394.83 $92.15
20610 Aspiration and/or injection of fluid from large joint
86 55 $294.14 $66.56
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
43 39 $775.28 $179.57
73562 X-ray of knee, 3 views
43 36 $231.23 $52.15
73110 X-ray of wrist, minimum of 3 views
43 28 $190.58 $42.62
73564 X-ray of knee, 4 or more views
37 30 $373.68 $84.47
Q4022 Cast supplies, short arm splint, adult (11 years +), fiberglass
35 27 $55.00 $14.62
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
34 34 $776.00 $168.79
73130 X-ray of hand, minimum of 3 views
34 29 $180.94 $40.73
29125 Application of nonmoveable forearm to hand splint
33 27 $312.73 $68.64
20550 Injection into tendon or ligament
20 14 $285.00 $55.45
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
18 18 $511.50 $109.28
73502 X-ray of hip, 2-3 views
16 14 $203.63 $46.10
29280 Placement of strapping to hand or finger
14 11 $162.00 $27.00
73030 X-ray of shoulder, minimum of 2 views
12 12 $159.00 $35.95

Medical Specialties & State Licenses

Specialist Primary Specialty

NUCC Taxonomy Code: 174400000X

State License MA 76547

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
3097391 (MA)

Hospital & Practice Group Affiliations

Mass General Brigham Community Physicians Inc

500 Merrimack St, Lawrence, MA 018431981

Phone: 9785578900

Mass General Brigham Community Physicians Inc

231 Sutton St, North Andover, MA 018451620

Phone: 9787250900

Mass General Brigham Community Physicians Inc

288 Groveland St, Haverhill, MA 018306674

Phone: 9783733851

Practice Associates & Co-Workers

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

8 Associated Practitioners
Dr. Jessica Andrade , DO

Family Medicine - Sports Medicine

NPI 1023514056

Doctor of Osteopathic Medicine (D.O.)

Dr. Bernard Brady , MD

Orthopaedic Surgery

NPI 1043259575

Doctor of Medicine (M.D.)

Donald Bartlett , PA

Physician Assistant - Medical

NPI 1073543260

Physician Assistant

Allison Touma , PA-C

Physician Assistant - Surgical

NPI 1215354956

Physician Assistant (Certified)

Sarah Swenson , PA-C

Physician Assistant - Surgical

NPI 1508555400

Physician Assistant (Certified)

NPI 1568456457

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 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 288 GROVELAND ST, HAVERHILL, MA 018306669 (Tel: 9783733851)

📍
Updated Business Mailing Address July 08, 2007

Registered at 288 GROVELAND ST, HAVERHILL, MA 018306669 (Tel: 9783733851)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as GREGORY JOHNSON, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Specialist (License #76547 in MA)

🟢
Initial NPI Registration & Enumeration June 08, 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: 1922049402
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 08, 2006
Last Update: July 13, 2026
Sole Proprietor: No

Mailing Address

288 Groveland St

Haverhill, MA 018306669

Phone: 9783733851

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.