1. Home
  2. Directory
  3. Colorado
  4. Greeley
  5. Internal Medicine
  6. NPI Profile

DR. SIEMAY CHANG LEE MD
NPI 1497966824
Internal Medicine in Greeley, CO

Active since May 25, 2007PECOS EnrolledAccepts Medicare Assignment
6767 WEST 29TH STREET, 2ND FLOOR, GREELEY, CO 80634(970) 652-2433(970) 652-2252 Get Directions Write a Review

NPPES record last updated: August 20, 2020. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Siemay Chang Lee Md NPPES

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

DR. SIEMAY CHANG LEE MD (NPI 1497966824) is an individual internal medicine provider in Greeley, Colorado, licensed in Colorado (DR.0052999) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Greeley, and is a graduate of Tulane University School Of Medicine (2001).

NPPES Registry Identity

NPI1497966824
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. SIEMAY CHANG LEECredential: MD
Location Address6767 WEST 29TH STREET, 2ND FLOORGreeley, CO 80634-5474
Mailing Address6767 West 29th Street, 2nd FloorGreeley, CO 80634-5474 · (970) 652-2433 · Fax (970) 652-2252
Phone(970) 652-2433
Fax(970) 652-2252
Sole ProprietorNo
Medical School CMSTulane University School Of MedicineGraduated 2001
Enumeration DateMay 25, 2007
Last NPPES UpdateAugust 20, 2020
NPPES CertifiedAugust 20, 2020
✔ NPI 1497966824 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in CO · DR.0052999✔ Licensed in NV · 11789
Definition
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.
6767 WEST 29TH STREET, Greeley, CO 80634
Open in Google Maps ↗

Secondary Practice Location 1

Location 11900 16th StGreeley, CO 80631-5114 · Phone (970) 350-2413 · Fax (970) 350-2473

Other Identifiers 1

Medicaid19052863CO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Siemay Chang Lee 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 ID840386488
PECOS Enrollment IDI20140613000773
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.

Areas of Expertise CMS Part B claims 10

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.

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.
326 services211 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
184 services184 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.
110 services79 patients
Anticoagulant management of patient taking warfarin 93793
Anticoagulant management with warfarin involves monitoring and adjusting your medication to prevent blood clots while minimizing the risk of bleeding. Regular blood tests measure your response to warfarin, helping adjust your dose if necessary. It's crucial to maintain a consistent diet and promptly report any changes in your health.
64 services17 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
52 services50 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
48 services46 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80634 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.

Referred Medical Equipment & Supplies CMS DME claims 20

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
10 suppliers31 claims80 services$6.68 avg. paid by Medicare
Normal, low and high calibrator solution / chips A4256
DME-Other DME · category DE000N
3 suppliers11 claims11 services$2.95 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
8 suppliers22 claims34 services$1.19 avg. paid by Medicare
Male external catheter, with or without adhesive, disposable, each A4349
DME-Medical/Surgical Supplies · category DA000N
2 suppliers19 claims662 services$1.70 avg. paid by Medicare
Intermittent urinary catheter, with insertion supplies A4353
DME-Orthotic Devices · category DF008N
1 supplier12 claims2,400 services$6.69 avg. paid by Medicare
Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357
DME-Orthotic Devices · category DF000N
2 suppliers23 claims41 services$8.67 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

UCHEALTH GREELEY HOSPITAL
Pharmacy
6767 WEST 29TH STREET
GREELEY, CO 80634
Weld County (970) 652-2125
ALEXANDER GRELL PA-C
Physician Assistant
6767 WEST 29TH STREET, 2ND FLOOR
GREELEY, CO 80634
Weld County (970) 652-2433
UCHEALTH GREELEY HOSPITAL
General Acute Care Hospital
6767 WEST 29TH STREET
GREELEY, CO 80634
Weld County (970) 652-2000
DR. LAWRENCE GUSTAVO DAVIS MD
Surgery
6767 WEST 29TH STREET
GREELEY, CO 80634
Weld County (970) 652-2426
ARIADNE VOGEL EBEL D.O,
Internal Medicine (Rheumatology)
6767 WEST 29TH STREET
GREELEY, CO 80634
Weld County (970) 652-2433
CATHY DIANE SMITH MD
Preventive Medicine (Occupational Medicine)
6767 WEST 29TH STREET
GREELEY, CO 80634
Weld County (970) 350-2471
KELSEY BOYER
Physical Therapist
6767 WEST 29TH STREET, 1ST FLOOR
GREELEY, CO 80634
Weld County (970) 313-2775

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 Siemay Lee's NPI number?

The NPI number for Siemay Lee is 1497966824. It was assigned to this individual provider in the NPPES registry on May 25, 2007.

Where is Siemay Lee located?

Siemay Lee practices at 6767 West 29th Street 2nd Floor, Greeley, CO 80634. The listed phone number is (970) 652-2433.

What is Siemay Lee's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Siemay Lee enrolled in Medicare?

Yes. Siemay Lee 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.

What insurance does Siemay Lee accept?

Health plans from Medica and UnitedHealthcare list Siemay Lee 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 Siemay Lee was last updated on August 20, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.