DR. JAMES D SINGLETON MD
NPI 1104881226
Internal Medicine - Rheumatology in Highlands Ranch, CO

Q: What is James Singleton's NPI number?

The NPI number for James Singleton is 1104881226. It was assigned to this individual provider in the NPPES registry on April 20, 2006.

Q: What is James Singleton's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Q: When was this NPI record last updated?

The NPPES record for James Singleton was last updated on April 21, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 20, 2006PECOS EnrolledAccepts Medicare Assignment

206 W COUNTY LINE ROAD, SUITE 310, HIGHLANDS RANCH, CO 80129(303) 788-8355(303) 788-4448 Get Directions Write a Review

NPPES record last updated: April 21, 2011. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. James D Singleton Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JAMES D SINGLETON MD (NPI 1104881226) is an individual rheumatology provider in Highlands Ranch, Colorado, licensed in Colorado (28405) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Kansas School Of Med (kc/wich/sal) (1983).

NPPES Registry Identity

NPI1104881226

Entity TypeIndividualMale

Primary Taxonomy207RR0500X

Provider Legal NameDR. JAMES D SINGLETONCredential: MD

Location Address206 W COUNTY LINE ROAD, SUITE 310Highlands Ranch, CO 80129-2359

Mailing Address206 W County Line Road, Suite 310Highlands Ranch, CO 80129-2359 · (303) 788-8355 · Fax (303) 788-4448

Phone(303) 788-8355

Fax(303) 788-4448

Sole ProprietorYes

Medical School CMSUniversity Of Kansas School Of Med (kc/wich/sal)Graduated 1983

Enumeration DateApril 20, 2006

Last NPPES UpdateApril 21, 2011

✔ NPI 1104881226 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

License✔ Licensed in CO · 28405

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

206 W COUNTY LINE ROAD, Highlands Ranch, CO 80129

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Other Identifiers 7

Other84143817901CO · Pacificare Of Colorado

Other0965432CO · Aetna Health Care

Medicaid01284058CO

Medicare ID-Type Unspecified660002007CO · Railroad Medicare

Medicare PINC398038CO

OtherSI83371CO · Anthem Bc/bs

Medicare UPING14570CO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Select Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. James D Singleton Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3072500388

PECOS Enrollment IDI20110414000448

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show James Singleton reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

South Denver Medicine Associates PC

2.5 mi

Rheumatology

4 W DRY CREEK CIR STE 230
Littleton, CO 80120

Reassigned Medicare billing, Colorado enrollment

NPI 1275598229 (303) 788-8355

Colorado Arthritis Center

6.2 mi

Specialist

701 E HAMPDEN AVE, STE 410
Englewood, CO 80113

Reassigned Medicare billing, Colorado enrollment
9 clinicians in this Medicare group

NPI 1811905086 (303) 788-1312

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 14

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, golimumab, 1 mg, for intravenous use J1602

Golimumab is a medication given through an IV (a small tube in your vein). It helps to reduce inflammation and pain by blocking a protein in your body that causes inflammation. It's often used to treat conditions like rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis.

12,200 services15 patients

Injection, infliximab-abda, biosimilar, (renflexis), 10 mg Q5104

Infliximab-abda (Renflexis) is a biosimilar medication given via injection. It's used to treat certain autoimmune conditions by reducing inflammation and immune system activity. The dosage is 10 mg.

3,600 services14 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

289 services47 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

223 services111 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

197 services92 patients

X-ray of foot, 2 views 73620

An X-ray of the foot, 2 views, is a quick, painless test that produces images of the bones and structures inside your foot. Two different angles are used to provide a comprehensive view. This helps doctors diagnose fractures, infections, or other abnormalities.

135 services67 patients

Administration of chemotherapy into vein, each additional hour 96415

Chemotherapy is a treatment method that uses drugs to destroy cancer cells. The drugs are administered into a vein, usually in the arm. Each additional hour of chemotherapy allows for more of the medication to enter your bloodstream to fight against the cancer cells.

134 services23 patients

X-ray of hand, 2 views 73120

An X-ray of the hand, 2 views, is a non-invasive imaging test that uses a small amount of radiation to produce pictures of the bones in your hand. Two different angles are captured to provide a comprehensive view. This helps in diagnosing injuries or conditions affecting your hand.

133 services66 patients

X-ray of wrist, 2 views 73100

An X-ray of the wrist, 2 views, is a diagnostic procedure where two different images of your wrist are taken using a small amount of radiation. This helps identify any abnormalities or injuries such as fractures or arthritis. It's a quick, non-invasive process.

132 services66 patients

Injection, zoledronic acid, 1 mg J3489

Zoledronic acid is a medication given via injection to strengthen bones. It's often used in patients with osteoporosis or certain types of cancer. The injection helps reduce the risk of fractures and other bone complications.

131 services27 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

74 services36 patients

Dxa bone density measurement of hip, pelvis, spine including spine fracture assessment 77085

A DXA bone density measurement is a non-invasive scan that helps assess the strength of your bones, specifically in the hip, pelvis, and spine areas. It can detect early signs of osteoporosis and evaluate fracture risk. This test uses low-dose X-rays for accurate results.

46 services46 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

18 services18 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

15 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80129 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$132.55 typical visit price

range $58.06 – $174.82

Typical copayment $33.13 (range $14.51 – $43.70)

Most-billed visit code 99204

Established Patient

$102.03 typical visit price

range $18.88 – $142.79

Typical copayment $25.50 (range $4.72 – $35.69)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is James Singleton's NPI number?

The NPI number for James Singleton is 1104881226. It was assigned to this individual provider in the NPPES registry on April 20, 2006.

Where is James Singleton located?

James Singleton practices at 206 W County Line Road Suite 310, Highlands Ranch, CO 80129. The listed phone number is (303) 788-8355.

What is James Singleton's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is James Singleton enrolled in Medicare?

Yes. James Singleton is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for James Singleton's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Singleton reassigns Medicare benefits to 2 organizations: South Denver Medicine Associates PC (Littleton, CO) and Colorado Arthritis Center (Englewood, CO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for James Singleton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does James Singleton accept?

Health plans from Select Health list James Singleton as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for James Singleton was last updated on April 21, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.