Active NPI 1033590773 Individual Practitioner Male Practitioner

Dr. Gregory Haman , MD

Internal Medicine • Willimantic, CT

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Haman, MD is a certified Internal Medicine practicing in Willimantic, CT. With approximately 11 years of clinical experience since graduating from Harvard Medical School in 2015, Dr. Haman delivers high-quality medical care to the local community at 5 FOUNDERS ST STE 100.

Dr. Haman is affiliated with Hartford Healthcare Medical Group Inc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, hemoglobin a1c level. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

5 Founders St Ste 100

Willimantic, CT 062262049

Telephone 8604239764

Associated Practice Facility / Clinic

🏢 Windham Medical Group Facility NPI 1013061100

Medicare Profile & Education

Medical School

Harvard Medical School

Graduation Year

2015

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Willimantic, CT

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

11 Yrs -7.5 yrs vs City Avg

City Avg: 18.5 Yrs

State Avg: 30.4 Yrs

Regional Practice Density

23 Specialists

Practicing in Willimantic, CT (2753 Statewide)

Telehealth Adoption Rate

17.4% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

54.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Haman (11 Years) 11 Yrs

Willimantic Specialty Average (18.5 Years) 18.5 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	485	181	$312.93	$139.13
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	135	135	$462.56	$143.08
83036 Hemoglobin A1C level	79	45	$41.71	$9.52
99213 Established patient office or other outpatient visit, typically 15 minutes	76	59	$221.58	$98.03
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	52	36	$59.23	$17.65
G0008 Administration of influenza virus vaccine	44	44	$65.00	$33.90
90662 Influenza vaccine split virus, preservative free	41	41	$110.00	$81.82
99496 Transitional care management services for problem of high complexity	25	23	$676.00	$305.93
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	24	22	$140.21	$61.61
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	17	17	$438.53	$196.89
91320 Sarscv2 vac 30mcg trs-suc im	16	16	$150.00	$140.06
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	16	15	$185.94	$58.74
90480 Admn sarscov2 vacc 1 dose	16	16	$70.00	$45.20

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	407	178	$306.33	$134.85
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	132	132	$451.70	$138.73
99213 Established patient office or other outpatient visit, typically 15 minutes	99	80	$215.91	$93.39
G0008 Administration of influenza virus vaccine	83	81	$65.00	$32.11
90662 Influenza vaccine split virus, preservative free	56	56	$73.21	$69.67
83036 Hemoglobin A1C level	54	37	$36.76	$9.43
91312 Coronavirus vaccine 13	40	37	$0.01	$0.01
0124A Fee covid-19 vac 13 res	39	36	$70.00	$43.34
91320 Sarscv2 vac 30mcg trs-suc im	31	31	$150.00	$124.34
90480 Admn sarscov2 vacc 1 dose	31	31	$70.00	$41.94
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	27	27	$35.00	$20.88
99496 Transitional care management services for problem of high complexity	26	23	$657.31	$293.59
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	26	24	$135.77	$56.70
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	25	20	$180.60	$56.24
G0009 Administration of pneumococcal vaccine	24	24	$70.00	$32.50
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	18	13	$427.78	$186.90
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	18	18	$373.00	$280.74
93000 Routine ekg using at least 12 leads including interpretation and report	16	16	$71.56	$15.63
99495 Transitional care management services for problem of at least moderate complexity	16	15	$485.63	$219.48

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	318	156	$307.94	$136.22
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	161	161	$459.07	$142.61
99213 Established patient office or other outpatient visit, typically 15 minutes	98	77	$212.60	$96.10
G0008 Administration of influenza virus vaccine	66	64	$65.00	$32.07
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	55	45	$131.64	$60.26
83036 Hemoglobin A1C level	50	34	$35.00	$9.61
91312 Coronavirus vaccine 13	46	46	$0.01	$0.01
0124A Fee covid-19 vac 13 res	46	46	$70.00	$41.36
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	37	37	$70.00	$42.65
91305 Sarscov2 vac 30 mcg trs-sucr	37	37	$0.01	$0.01
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	36	35	$35.00	$20.93
90662 Influenza vaccine split virus, preservative free	31	31	$70.00	$68.54
0064A Adm sarscov2 50mcg/0.25mlbst	27	27	$70.00	$42.65
91306 Sarscov2 vac 50mcg/0.25ml im	27	27	$0.01	$0.01
G0009 Administration of pneumococcal vaccine	24	24	$70.00	$32.15
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	22	21	$203.64	$57.99
99496 Transitional care management services for problem of high complexity	19	19	$658.16	$283.78
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	17	17	$419.71	$188.80
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	17	17	$372.00	$277.77
99497 Advance care planning, first 30 minutes	12	12	$231.25	$90.88

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	280	186	$310.00	$139.69
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	119	119	$470.00	$142.90
99213 Established patient office or other outpatient visit, typically 15 minutes	78	63	$210.00	$98.89
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	72	58	$130.00	$61.16
83036 Hemoglobin A1C level	68	49	$35.00	$9.57
G0008 Administration of influenza virus vaccine	67	67	$65.00	$18.52
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	41	41	$35.00	$20.46
90662 Influenza vaccine split virus, preservative free	26	26	$70.00	$65.26
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	21	21	$220.00	$57.36
0003A Adm sarscov2 30mcg/0.3ml 3rd	21	21	$70.00	$43.50
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	18	16	$415.00	$195.23
82043 Urine microalbumin (protein) level	16	16	$20.00	$5.78
99495 Transitional care management services for problem of at least moderate complexity	15	11	$475.00	$223.13
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$470.00	$180.87
G0009 Administration of pneumococcal vaccine	11	11	$70.00	$16.83

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	85	56	$292.00	$118.29
99213 Established patient office or other outpatient visit, typically 15 minutes	37	31	$197.00	$81.76
G0008 Administration of influenza virus vaccine	28	28	$60.00	$18.33
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	28	28	$30.00	$19.58
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	26	26	$444.00	$125.94
93000 Routine ekg using at least 12 leads including interpretation and report	16	14	$64.00	$18.75
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	12	12	$447.00	$178.46

Medical Specialties & State Licenses

CMS Verified: 2020-05-06

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License CT 65062

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.

Internal Medicine

NUCC Taxonomy Code: 207R00000X

State License IL 125066888

Additional State Medicaid & Healthcare Payer Identifiers

Commercial Insurance / Payer ID Ct Lic

65062 (CT)

Hospital & Practice Group Affiliations

Hartford Healthcare Medical Group Inc

5 Founders St, Willimantic, CT 062262048

Phone: 8604235000

Secondary Practice Locations

5841 S Maryland Ave, Room A700; Mc-7082

Chicago, IL 606371447

Phone: 7737026840

5841 S Maryland Ave, Room A700; Mc-7082

Chicago, IL 606371447

Phone: 7737026840

Cermak Health Services Of Cook County, 2800 South California Avenue

Chicago, IL 606085107

Phone: 7736747488

Practice Associates & Co-Workers

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

13 Associated Practitioners

Dr. Stephen Leach , MD

Internal Medicine

NPI 1124088547

Doctor of Medicine (M.D.)

Dr. Walter Mcphee , MD

Internal Medicine

NPI 1144229113

Doctor of Medicine (M.D.)

Dr. Judith Ukabam , MD

Internal Medicine - Geriatric Medicine

NPI 1306370010

Doctor of Medicine (M.D.)

Shauna Rago , APRN

Nurse Practitioner

NPI 1457544728

Advanced Practice Registered Nurse

Dr. Surayda Herrera , DO

Internal Medicine

NPI 1497169700

Doctor of Osteopathic Medicine (D.O.)

Cheryl Eaton , APRN

Nurse Practitioner - Primary Care

NPI 1649712084

Advanced Practice Registered Nurse

Career & Practice History Timeline

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

11 Historical Events

📍

Updated Practice Location May 06, 2020

Registered at 5 FOUNDERS ST STE 100, WILLIMANTIC, CT 062262049 (Tel: 8604239764)

📍

Updated Business Mailing Address May 06, 2020

Registered at 1290 SILAS DEANE HWY, HHC CVO ENROLLMENT 1ST FLOOR, WETHERSFIELD, CT 06109

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 06, 2020

Internal Medicine (License #65062 in CT)

📍

Updated Practice Location June 27, 2018

Registered at CERMAK HEALTH SERVICES OF COOK COUNTY, 2800 SOUTH CALIFORNIA AVENUE, CHICAGO, IL 606085107 (Tel: 7736747488)

📍

Updated Business Mailing Address June 27, 2018

Registered at CERMAK HEALTH SERVICES OF COOK COUNTY, 2800 SOUTH CALIFORNIA AVENUE, CHICAGO, IL 606085107

✅

NPI Profile Active June 17, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location June 17, 2015

Registered at 5841 S MARYLAND AVE, ROOM A700; MC-7082, CHICAGO, IL 606371447 (Tel: 7737026840)

📍

Updated Business Mailing Address June 17, 2015

Registered at 5841 S MARYLAND AVE, ROOM A700; MC-7082, CHICAGO, IL 606371447 (Tel: 7737026840)

👤

Provider Name / Credentials Updated June 17, 2015

Recorded as GREGORY HAMAN, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 17, 2015

Internal Medicine (License #125066888 in IL)

🟢

Initial NPI Registration & Enumeration June 17, 2015

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1033590773

Entity Type:

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

Enumeration Date: June 17, 2015

Last Update: May 06, 2020

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

1290 Silas Deane Hwy, Hhc Cvo Enrollment 1st Floor

Wethersfield, CT 06109

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.