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Internal Medicine Providers in Lone Tree, CO

Browse 48 Internal Medicine providers listed in NPPES with a practice address in Lone Tree, Colorado.

48 Healthcare Providers

How Lone Tree compares with the U.S.

Lone Tree has 339 clinicians in Internal Medicine per 100,000 residents, 7.6 times the U.S. rate of 44.

That is 48 active clinicians in Internal Medicine with a practice address in Lone Tree, for a population of 14,147.

The Colorado rate is 35 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

97% of clinicians in Internal Medicine in Lone Tree listed in the CMS Medicare file (34 of 35) accept Medicare assignment. That is similar to the Colorado share of 97%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

37% of clinicians in Internal Medicine in Lone Tree listed in the CMS Medicare file (13 of 35) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the Colorado share of 36%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Lone Tree, CO

Source: CMS PECOS
PECOS Enrolled Specialists 40 In Lone Tree, CO
Part B Lab & Imaging Eligible 44 Diagnostic Referrals
DME Ordering Eligible 44 Durable Medical Equipment
Home Health Agency Referrals 44 HHA Ordering Eligible
Showing 1โ€“20 of 48 providers
With recent CMS data first, then Aโ€“Z

Dr. Mitchel Brown , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10099 Ridgegate Pkwy Ste 120, Lone Tree, CO 801245532
Phone: 7204763364
NPI Identifier 1629424981
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Dr. David Arthur Burrows , MD, FACP

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9218 Kimmer Dr Ste 207, Lone Tree, CO 801246733
Phone: 7204939006
NPI Identifier 1215072160
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Dr. Andrzej Dankowski , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
9615 Aspen Hill Cir, Lone Tree, CO 801246744
Phone: 3039605486
NPI Identifier 1326014507
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Dr. Johnathan Lee William Davis , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10101 Ridgegate Pkwy, Lone Tree, CO 801245522
Phone: 7202251322
NPI Identifier 1437530110
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Dr. Cristian L Dinescu , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9540 Park Meadows Dr, Lone Tree, CO 801242894
Phone: 7208489300
NPI Identifier 1750302790
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Dr. Ayman S Elbatanony , DO, MBCHB, MBA

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10101 Ridgegate Pkwy, Lone Tree, CO 801245522
Phone: 9172845749
NPI Identifier 1285260240
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Amanda Fahrenbruck

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10099 Ridgegate Pkwy Ste 200, Lone Tree, CO 801245532
Phone: 7204763364
NPI Identifier 1588304323
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Dr. Sarah Fraser , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
10099 Ridgegate Pkwy Ste 200, Lone Tree, CO 801245532
Phone: 7202254464
NPI Identifier 1053051516
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Dr. Carolyn Marie Grachen , DO

Internal Medicine

Active NPI Status
10101 Ridgegate Pkwy, Lone Tree, CO 801245522
Phone: 7202251000
NPI Identifier 1659073294
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Dr. Sarah Danielle Graeber , DO

Internal Medicine

Active NPI Status
9695 S Yosemite St Ste 224, Lone Tree, CO 801242890
Phone: 3032653970
NPI Identifier 1629770482
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Dr. Elijah Seeger Grillo , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9695 S Yosemite St Ste 224, Lone Tree, CO 801242890
Phone: 3032653970
NPI Identifier 1285029447
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Dr. Anna K.d. Gutmann , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10101 Ridgegate Pkwy, Lone Tree, CO 801245522
Phone: 3033384545
NPI Identifier 1083887392
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Dr. Adam Hansen , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10099 Ridgegate Pkwy Ste 200, Lone Tree, CO 801245532
Phone: 7208752880
NPI Identifier 1538690201
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Dr. Robert Heineman , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10099 Ridgegate Pkwy Ste 200, Lone Tree, CO 801245532
Phone: 7204763364
NPI Identifier 1053872101
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Dr. Kevin Hou , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9695 S Yosemite St Ste 224, Lone Tree, CO 801242890
Phone: 3032653970
NPI Identifier 1447644372
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Dr. Kenji Kaye , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10535 Park Meadows Blvd Ste 340, Lone Tree, CO 801248401
Phone: 7202551621
NPI Identifier 1083051155
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Dr. Dennis Keselman , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10101 Ridgegate Pkwy, Sky Ridge Internal Medicine Residency, Lone Tree, CO 801245522
Phone: 7202251322
NPI Identifier 1144661034
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Dr. Egor Kuznetsov , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10101 Ridgegate Pkwy, Lone Tree, CO 801245522
Phone: 3033384545
NPI Identifier 1639337165
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Dr. Ronald Kwong , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
10101 Ridgegate Pkwy, Lone Tree, CO 801245522
Phone: 7202251000
NPI Identifier 1609129022
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Dr. Daniel James Malley , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
10101 Ridgegate Pkwy, Lone Tree, CO 801245522
Phone: 7202251000
NPI Identifier 1659959567
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Frequently Asked Questions about Internal Medicine in Lone Tree

How do I check a Internal Medicine practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Colorado licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.