Dr. Gregory Haman , MD
Internal Medicine โข Willimantic, CT
5 Founders St Ste 100
Willimantic, CT 062262049
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. Gregory Haman is listed in NPPES under Internal Medicine.
-
NPI assigned on June 17, 2015; this date does not establish years in practice.
-
Published CMS data list 1,026 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
-
Published Part B service records, 2024:
- 99214 โ Established patient outpatient office visit: 485 service units.
- G0439 โ Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 135 service units.
- 83036 โ Hemoglobin a1c level: 79 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 13 records in the table ยท Guide: How to read Medicare Part B data
-
Published CMS data list 11,020 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
-
Published Part D records, 2024:
- Atorvastatin Calcium โ 849 prescription fills, including refills.
- Amlodipine Besylate โ 778 prescription fills, including refills.
- Losartan Potassium โ 434 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 164 records in the table ยท Guide: How to read Medicare Part D prescriber data
-
More Medicare Part B services than 80% of clinicians listed under Internal Medicine in Connecticut (2024, 1,500 clinicians with data). Median for this group: 498. Middle half: 204 to 901.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 232 in 2020 to 1,026 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
5 Founders St Ste 100
Willimantic, CT 062262049
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Chicago, IL. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Hartford Healthcare Medical Group Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Harvard Medical School
2015
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
251 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $117,138 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $93,749 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
26,744 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$1,226,834 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
11 years (graduated 2015)
CMS Doctors and Clinicians data list 2015 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2015
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Haman has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Haman as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Willimantic and Connecticut
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 80% of clinicians listed under Internal Medicine in Connecticut (2024, 1,500 clinicians with data). Median for this group: 498. Middle half: 204 to 901.
Too few clinicians listed under Internal Medicine in Willimantic have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 85% of clinicians listed under Internal Medicine in Connecticut (2024, 1,500 clinicians with data). Median for this group: $50,793. Middle half: $22,001 to $86,184.
Too few clinicians listed under Internal Medicine in Willimantic have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 85% of clinicians listed under Internal Medicine in Connecticut (2024, 1,500 clinicians with data). Median for this group: $39,329. Middle half: $16,463 to $67,151.
Too few clinicians listed under Internal Medicine in Willimantic have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under Internal Medicine in Connecticut (2024, 1,571 clinicians with data). Median for this group: 1,218. Middle half: 98 to 4,433.
Too few clinicians listed under Internal Medicine in Willimantic have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 95% of clinicians listed under Internal Medicine in Connecticut (2024, 1,571 clinicians with data). Median for this group: $91,415. Middle half: $3,967 to $384,333.
Too few clinicians listed under Internal Medicine in Willimantic have Medicare Part D data for 2024 to compare.
20 active clinicians are listed under Internal Medicine with a practice address in Willimantic, CT (2,625 in Connecticut).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Willimantic
20% of these 20 clinicians have the CMS telehealth indicator.
40% of these 20 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part B services
Medicare Part B services increased 342% from 232 in 2020 to 1,026 in 2024.
- 2020: 232
- 2021: 866
- 2022: 1,146
- 2023: 1,168
- 2024: 1,026
-
Medicare-allowed amount
Medicare-allowed amount increased 490% from $19,857 in 2020 to $117,138 in 2024.
- 2020: $19,857
- 2021: $84,271
- 2022: $105,580
- 2023: $120,400
- 2024: $117,138
-
Paid by Medicare
Paid by Medicare increased 478% from $16,223 in 2020 to $93,749 in 2024.
- 2020: $16,223
- 2021: $64,434
- 2022: $85,585
- 2023: $96,229
- 2024: $93,749
-
Medicare Part D prescriptions
Medicare Part D prescriptions increased 750% from 1,297 in 2020 to 11,020 in 2024.
- 2020: 1,297
- 2021: 6,900
- 2022: 8,674
- 2023: 8,732
- 2024: 11,020
-
30-day fills
30-day fills increased 810% from 2,940 in 2020 to 26,744 in 2024.
- 2020: 2,940
- 2021: 16,995
- 2022: 20,983
- 2023: 20,658
- 2024: 26,744
-
Part D drug cost
Part D drug cost increased 1101% from $102,110 in 2020 to $1,226,834 in 2024.
- 2020: $102,110
- 2021: $771,425
- 2022: $1,046,525
- 2023: $1,135,517
- 2024: $1,226,834
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2019โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2020โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | 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 with low level od decision making, if using time, 20 minutes or more
|
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 |
|
90480
Admn sarscov2 vacc 1 dose
|
16 | 16 | $70.00 | $45.20 |
|
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 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 849 | 71,599 | $8,222.18 | 259 |
| Amlodipine Besylate | Amlodipine Besylate | 778 | 66,297 | $4,769.25 | 227 |
| Losartan Potassium | Losartan Potassium | 434 | 37,529 | $3,947.64 | 132 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 372 | 31,309 | $3,536.82 | 116 |
| Metoprolol Succinate | Metoprolol Succinate | 354 | 28,055 | $4,176.58 | 102 |
| Hydrochlorothiazide | Hydrochlorothiazide | 334 | 28,686 | $1,536.73 | 104 |
| Levothyroxine Sodium | Levothyroxine Sodium | 330 | 27,956 | $3,749.83 | 101 |
| Lisinopril | Lisinopril | 304 | 26,471 | $2,107.26 | 96 |
| Gabapentin | Gabapentin | 281 | 16,340 | $4,844.86 | 83 |
| Metformin Hcl | Metformin Hcl | 273 | 21,275 | $1,904.06 | 77 |
| Pantoprazole Sodium | Pantoprazole Sodium | 241 | 18,612 | $2,284.52 | 76 |
| Ozempic | Semaglutide | 208 | 7,408 | $214,502.50 | 47 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 187 | 4,941 | $3,502.66 | 64 |
| Allopurinol | Allopurinol | 171 | 14,936 | $1,846.81 | 46 |
| Metformin Hcl Er | Metformin Hcl | 167 | 14,244 | $1,613.77 | 59 |
| Tamsulosin Hcl | Tamsulosin Hcl | 165 | 14,093 | $3,404.34 | 53 |
| Jardiance | Empagliflozin | 162 | 11,323 | $226,121.61 | 44 |
| Omeprazole | Omeprazole | 151 | 12,341 | $2,645.41 | 52 |
| Sertraline Hcl | Sertraline Hcl | 142 | 11,332 | $877.59 | 51 |
| Simvastatin | Simvastatin | 139 | 12,510 | $1,322.60 | 47 |
| Potassium Chloride | Potassium Chloride | 131 | 10,375 | $2,545.12 | 36 |
| Furosemide | Furosemide | 129 | 10,262 | $804.44 | 42 |
| Eliquis | Apixaban | 125 | 8,828 | $168,757.83 | 37 |
| Valsartan | Valsartan | 122 | 10,680 | $3,795.22 | 36 |
| Alprazolam | Alprazolam | 112 | 3,036 | $415.24 | 36 |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2020-05-06NUCC Taxonomy Code: 207R00000X
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.
NUCC Taxonomy Code: 207R00000X
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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20210217001220
TX
2961702964
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
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
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Social Worker - Clinical
Master of Social Work, Licensed Clinical Social Worker
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine
Nurse Practitioner
Advanced Practice Registered Nurse
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 5 FOUNDERS ST STE 100, WILLIMANTIC, CT 062262049 (Tel: 8604239764)
Registered at 1290 SILAS DEANE HWY, HHC CVO ENROLLMENT 1ST FLOOR, WETHERSFIELD, CT 06109
Internal Medicine (license number reported to NPPES: CT 65062)
Registered at CERMAK HEALTH SERVICES OF COOK COUNTY, 2800 SOUTH CALIFORNIA AVENUE, CHICAGO, IL 606085107 (Tel: 7736747488)
Registered at CERMAK HEALTH SERVICES OF COOK COUNTY, 2800 SOUTH CALIFORNIA AVENUE, CHICAGO, IL 606085107
NPI status registered as active in NPPES database
Registered at 5841 S MARYLAND AVE, ROOM A700; MC-7082, CHICAGO, IL 606371447 (Tel: 7737026840)
Registered at 5841 S MARYLAND AVE, ROOM A700; MC-7082, CHICAGO, IL 606371447 (Tel: 7737026840)
Recorded as GREGORY HAMAN, M.D.
Internal Medicine (license number reported to NPPES: IL 125066888)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Willimantic
- Ana Paula Pinto Copetti
- Dr. Chelliah Pandian, MD
- Dr. Kipp Spencer, MD
- Dr. Victorio Te, MD
- Dr. Julian Munoz, MD
- Dr. Ann Semolic, MD
More public profiles in Connecticut
Directory navigation, in NPI number order.
- Ravi Kaza, MD Obstetrics & Gynecology ยท New Haven
- Ian Cohen, MD Obstetrics & Gynecology ยท Waterbury
- Marlene Waradzin, MD Obstetrics & Gynecology ยท Wallingford
- Michael O Brien, CRNA Nurse Anesthetist, Certified Registered ยท Bridgeport
- Nathaniel Georgette, CRNA Nurse Anesthetist, Certified Registered ยท Southbury
- Christopher Taubes, MD Radiology - Diagnostic Radiology ยท Manchester
- David Baum, MD Internal Medicine ยท Westport
- Rochelle Layog, DPT Physical Therapist ยท Danbury
- David Silver Internal Medicine ยท Cheshire
- Robert Davenport, PT Physical Therapist ยท Winsted
- Nancy Rini, MD Radiology - Diagnostic Radiology ยท Middletown
- David Tom, MD Ophthalmology ยท Hamden
Mailing Address
1290 Silas Deane Hwy, Hhc Cvo Enrollment 1st Floor
Wethersfield, CT 06109