Dr. Gregory G Allen , DO
Internal Medicine • Cranston, RI
1681 Cranston St, Suite D
Cranston, RI 029205000
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Gregory Allen is listed in NPPES under Internal Medicine.
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NPI assigned on July 1, 2005; this date does not establish years in practice.
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Published CMS data list 340 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 91 service units.
- 83036 — Hemoglobin a1c level: 73 service units.
- 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: 66 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® 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 7 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 6,645 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Atorvastatin Calcium — 453 prescription fills, including refills.
- Lisinopril — 240 prescription fills, including refills.
- Omeprazole — 238 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 127 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 90% of clinicians listed under Internal Medicine in Cranston, RI (2024, 21 clinicians with data). Median for this group: 792. Middle half: 508 to 1,420.
Close to the middle for Medicare Part B services among clinicians listed under Internal Medicine in Rhode Island (2024, 529 clinicians with data). Median for this group: 396. Middle half: 234 to 705.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 500 in 2020 to 340 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1681 Cranston St
Suite D
Cranston, RI 029205000
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Prospect Chartercare Physicians Llc; Vmd Primary Providers Of Rhode Island Pc. 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
University Of New England, College Of Osteo Medicine
2002
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
103 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 – by Provider, 2024.
Medicare-allowed amount
About $23,043 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 – by Provider and Service, 2024.
Paid by Medicare
About $18,919 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 – by Provider and Service, 2024.
30-day fills
11,927 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
$539,514 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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $2,387.96 across 60 records.
By nature of payment
- Food and Beverage: $1,322.96 across 59 records.
- Consulting Fee: $1,065.00 across 1 record.
Reporting-company totals (3 largest of 17)
- Novo Nordisk Inc: $1,140.86 across 4 records.
- ABBVIE INC.: $336.35 across 20 records.
- Abbott Laboratories: $187.22 across 5 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
24 years (graduated 2002)
CMS Doctors and Clinicians data list 2002 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
2005
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, “Does your provider accept Medicare as full payment?”
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. Allen 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. Allen 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 Cranston and Rhode Island
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 90% of clinicians listed under Internal Medicine in Cranston, RI (2024, 21 clinicians with data). Median for this group: 792. Middle half: 508 to 1,420.
Close to the middle for clinicians listed under Internal Medicine in Rhode Island (2024, 529 clinicians with data). Median for this group: 396. Middle half: 234 to 705.
Medicare-allowed amount
A lower Medicare-allowed amount than 90% of clinicians listed under Internal Medicine in Cranston, RI (2024, 21 clinicians with data). Median for this group: $65,866. Middle half: $48,986 to $116,808.
A lower Medicare-allowed amount than 70% of clinicians listed under Internal Medicine in Rhode Island (2024, 529 clinicians with data). Median for this group: $38,752. Middle half: $20,970 to $59,070.
Paid by Medicare
A lower Medicare payment amount than 90% of clinicians listed under Internal Medicine in Cranston, RI (2024, 21 clinicians with data). Median for this group: $49,986. Middle half: $32,711 to $85,586.
A lower Medicare payment amount than 65% of clinicians listed under Internal Medicine in Rhode Island (2024, 529 clinicians with data). Median for this group: $28,221. Middle half: $15,243 to $44,860.
Medicare Part D prescriptions
Fewer Part D prescriptions than 65% of clinicians listed under Internal Medicine in Cranston, RI (2024, 23 clinicians with data). Median for this group: 8,147. Middle half: 5,824 to 11,852.
More Part D prescriptions than 80% of clinicians listed under Internal Medicine in Rhode Island (2024, 581 clinicians with data). Median for this group: 749. Middle half: 91 to 5,119.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine in Cranston, RI (2024, 23 clinicians with data). Median for this group: $491,970. Middle half: $416,762 to $726,103.
A higher Part D drug cost than 80% of clinicians listed under Internal Medicine in Rhode Island (2024, 581 clinicians with data). Median for this group: $63,829. Middle half: $3,341 to $358,176.
38 active clinicians are listed under Internal Medicine with a practice address in Cranston, RI (1,034 in Rhode Island).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Cranston
21.1% of these 38 clinicians have the CMS telehealth indicator.
55.3% of these 38 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.
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Medicare Part B services
Medicare Part B services decreased 32% from 500 in 2020 to 340 in 2024.
- 2020: 500
- 2021: 314
- 2022: 329
- 2023: 335
- 2024: 340
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Medicare-allowed amount
Medicare-allowed amount decreased 20% from $28,837 in 2020 to $23,043 in 2024.
- 2020: $28,837
- 2021: $27,936
- 2022: $27,519
- 2023: $28,423
- 2024: $23,043
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Paid by Medicare
Paid by Medicare decreased 14% from $21,925 in 2020 to $18,919 in 2024.
- 2020: $21,925
- 2021: $22,425
- 2022: $21,210
- 2023: $24,350
- 2024: $18,919
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 6,319 in 2020 and 6,645 in 2024.
- 2020: 6,319
- 2021: 6,006
- 2022: 6,145
- 2023: 6,518
- 2024: 6,645
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30-day fills
30-day fills stayed about the same: 11,232 in 2020 and 11,927 in 2024.
- 2020: 11,232
- 2021: 10,549
- 2022: 10,786
- 2023: 11,372
- 2024: 11,927
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Part D drug cost
Part D drug cost increased 41% from $383,329 in 2020 to $539,514 in 2024.
- 2020: $383,329
- 2021: $337,072
- 2022: $359,734
- 2023: $455,034
- 2024: $539,514
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 76% from $9,766.81 in 2021 to $2,387.96 in 2025.
- 2021: $9,766.81
- 2022: $5,311.18
- 2023: $650.58
- 2024: $929.01
- 2025: $2,387.96
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): 60 records totaling $2,387.96.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Novo Nordisk Inc |
Consulting Fee
Cash or cash equivalent
|
— | General | $1,065.00 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
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FREESTYLE LIBRE 3 | General | $115.26 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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Cologuard Collection Kit | General | $34.46 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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OFEV | General | $31.31 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Wegovy | General | $31.22 |
| Verona Pharma, Inc. |
Food and Beverage
Cash or cash equivalent
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Ohtuvayre | General | $31.10 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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UBRELVY | General | $30.64 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
EVENITY | General | $29.95 |
| Verona Pharma, Inc. |
Food and Beverage
Cash or cash equivalent
|
Ohtuvayre | General | $29.58 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
VYNDAMAX | General | $28.75 |
| Sumitomo Pharma America, Inc. |
Food and Beverage
In-kind items and services
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GEMTESA | General | $28.44 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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UBRELVY | General | $28.10 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
|
Cologuard Collection Kit | General | $27.57 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
— | General | $27.36 |
| Bristol Myers Squibb Company |
Food and Beverage
Cash or cash equivalent
|
ELIQUIS | General | $27.29 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
— | General | $26.67 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $26.08 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VRAYLAR | General | $25.56 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
|
FREESTYLE LIBRE 3 | General | $24.83 |
| Biogen, Inc. |
Food and Beverage
In-kind items and services
|
SKYCLARYS | General | $23.99 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VRAYLAR | General | $23.89 |
| Lundbeck LLC |
Food and Beverage
Cash or cash equivalent
|
REXULTI | General | $23.64 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
JARDIANCE | General | $23.45 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
NURTEC ODT | General | $23.08 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
EVENITY | General | $23.03 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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 – by Provider and Service data, 2017–2024; 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
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91 | 64 | $289.76 | $116.98 |
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83036
Hemoglobin a1c level
|
73 | 44 | $24.95 | $8.78 |
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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
|
66 | 52 | $32.00 | $16.35 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
|
63 | 63 | $298.00 | $128.76 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
24 | 24 | $196.83 | $84.53 |
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G0008
Administration of influenza virus vaccine
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12 | 12 | $50.25 | $32.68 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
|
11 | 11 | $34.00 | $13.15 |
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 | 453 | 32,949 | $5,775.15 | 109 |
| Lisinopril | Lisinopril | 240 | 17,142 | $1,456.62 | 53 |
| Omeprazole | Omeprazole | 238 | 14,135 | $3,608.38 | 47 |
| Levothyroxine Sodium | Levothyroxine Sodium | 201 | 12,288 | $2,457.87 | 37 |
| Amlodipine Besylate | Amlodipine Besylate | 187 | 12,512 | $1,535.05 | 44 |
| Alprazolam | Alprazolam | 177 | 4,982 | $1,084.51 | 26 |
| Gabapentin | Gabapentin | 168 | 6,642 | $2,772.67 | 32 |
| Simvastatin | Simvastatin | 159 | 8,243 | $1,094.24 | 25 |
| Fluticasone Propionate | Fluticasone Propionate | 159 | 8,072 | $3,001.13 | 44 |
| Ibuprofen | Ibuprofen | 159 | 7,158 | $3,229.61 | 37 |
| Losartan Potassium | Losartan Potassium | 154 | 13,163 | $1,613.96 | 41 |
| Pantoprazole Sodium | Pantoprazole Sodium | 136 | 7,507 | $1,743.89 | 31 |
| Montelukast Sodium | Montelukast Sodium | 135 | 7,104 | $1,846.75 | 25 |
| Furosemide | Furosemide | 121 | 7,253 | $640.85 | 32 |
| Metformin Hcl | Metformin Hcl | 116 | 7,452 | $854.28 | 27 |
| Hydrochlorothiazide | Hydrochlorothiazide | 109 | 8,374 | $366.63 | 28 |
| Pravastatin Sodium | Pravastatin Sodium | 108 | 6,584 | $1,663.31 | 23 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 100 | 2,653 | $3,715.48 | 12 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 97 | 8,128 | $1,248.96 | 24 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 95 | 3,148 | $2,186.86 | 27 |
| Eliquis | Apixaban | 91 | 3,193 | $60,516.36 | 14 |
| Zolpidem Tartrate | Zolpidem Tartrate | 87 | 2,730 | $870.24 | 11 |
| Metoprolol Tartrate | Metoprolol Tartrate | 86 | 5,834 | $609.18 | 18 |
| Sertraline Hcl | Sertraline Hcl | 86 | 5,645 | $907.60 | 20 |
| Oxycodone Hcl | Oxycodone Hcl | 78 | 2,094 | $2,242.59 | — |
(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
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20050610000848
RI
2668416637
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
Vmd Primary Providers Of Rhode Island Pc
106 Nate Whipple Hwy, Cumberland, RI 028641403
Phone: 40165820201403
Prospect Chartercare Physicians Llc
1681 Cranston St, Cranston, RI 029205000
Phone: 4019446889
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 - Primary Care
Nurse Practitioner
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History
NPI enumerated July 01, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Cranston
- Dr. Antioan Kardous, MD
- Dr. Stephanie Krusz, MD
- Dr. Karen Stevenson, MD
- Dr. Hao Huang, MD
- Dr. Brian Pickett, MD
- Dr. Ralph Santoro, MD
More public profiles in Rhode Island
Directory navigation, in NPI number order.
- Nancy Moye, CRNP Nurse Practitioner - Family · Cranston
- Melissa Robidoux, DPT Physical Therapist · North Providence
- Laurie Galvin Pharmacist · Bristol
- Memah Howard, PA-C Physician Assistant - Medical · Johnston
- Ryan Toher, PT, DPT Physical Therapist · Johnston
- Janice Gardner, OD Optometrist · Warwick
- Joseph Farnam, MD Radiology - Vascular & Interventional Radiology · Newport
- Vito Ferri, DO Internal Medicine · Johnston
- Jocelyn Cobb, PA-C Physician Assistant - Surgical · Pawtucket
- Lola Mclaren Cevallos, MD Internal Medicine · E Greenwich
- Casey Chiu Emergency Medicine · Westerly
- Jacob Hettinger, OD Optometrist · Providence
Mailing Address
1681 Cranston St, Suite D
Cranston, RI 029205000
Phone: 4019468446