DR. NATALIE C LEE MD
NPI 1447371505
Internal Medicine - Gastroenterology in Greenbrae, CA

Q: What is Natalie Lee's NPI number?

The NPI number for Natalie Lee is 1447371505. It was assigned to this individual provider in the NPPES registry on April 3, 2007.

Q: What is Natalie Lee's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Natalie Lee was last updated on February 8, 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 03, 2007PECOS Enrolled

1350 S ELISEO DR, SUITE 130, GREENBRAE, CA 94904(415) 925-6900(415) 925-6919 Get Directions Write a Review

NPPES record last updated: February 8, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Natalie C Lee Md NPPES

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

DR. NATALIE C LEE MD (NPI 1447371505) is an individual gastroenterology provider in Greenbrae, California, licensed in California (A69882) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1997).

NPPES Registry Identity

NPI1447371505

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameDR. NATALIE C LEECredential: MD

Location Address1350 S ELISEO DR, SUITE 130Greenbrae, CA 94904-2011

Mailing Address1350 S Eliseo Dr, Suite 130Greenbrae, CA 94904-2011 · (415) 925-6900 · Fax (415) 925-6919

Phone(415) 925-6900

Fax(415) 925-6919

Sole ProprietorNo

Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 1997

Enumeration DateApril 3, 2007

Last NPPES UpdateFebruary 8, 2011

✔ NPI 1447371505 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · A69882

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

1350 S ELISEO DR, Greenbrae, CA 94904

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Natalie C Lee Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3375512734

PECOS Enrollment IDI20041001000359

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 Reassignment

Medicare enrollment records show Natalie Lee reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Regents Univ Of California Ucsf

13 mi

Internal Medicine

505 PARNASSUS AVE
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
339 clinicians in this Medicare group

NPI 1124439807 (415) 476-1000

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.

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.

218 services164 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

194 services194 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

157 services155 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

132 services132 patients

Removal of external hemorrhoids by rubber banding 46221

Rubber band ligation is a procedure used to treat external hemorrhoids. A doctor places small rubber bands around the base of the hemorrhoids. This cuts off blood supply, causing them to shrink and fall off, typically within a week.

92 services47 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.

81 services81 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

54 services31 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

38 services37 patients

Online digital evaluation and management service for an established patient for up to 7 days, total time 5-10 minutes 99421

This service involves a week-long digital assessment of your health status. It's conducted online by your healthcare provider, focusing on managing your existing health condition. The process takes 5-10 minutes of your time daily, ensuring optimal health management.

38 services31 patients

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 43249

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

26 services26 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

23 services23 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

14 services14 patients

Telephone medical discussion with physician, 5-10 minutes 99441

A telephone medical discussion with a physician is a brief, 5-10 minute call where you can discuss your health concerns. It's a convenient way to receive medical advice without needing to visit a clinic. It's important to prepare questions in advance to make the most of this time.

13 services11 patients

Online digital evaluation and management service for an established patient for up to 7 days, total time 11-20 minutes 99422

This is a digital health service for existing patients. Over a week, your healthcare provider will assess and manage your health concerns online. The total time spent communicating will be between 11-20 minutes. This service offers convenience and continuous care.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94904 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

$154.04 typical visit price

range $69.07 – $202.63

Typical copayment $38.51 (range $17.26 – $50.65)

Most-billed visit code 99204

Established Patient

$119.61 typical visit price

range $23.44 – $166.64

Typical copayment $29.90 (range $5.86 – $41.66)

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.

Other Providers at the Same Location NPPES 20

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

DR. LEAH MORTON KELLEY M.D.

Surgery (Surgical Oncology)

1350 S ELISEO DR, SUITE 210
GREENBRAE, CA 94904

Marin County (415) 925-5035

DR. ALBERT A VARNER MD

Internal Medicine (Gastroenterology)

1350 S ELISEO DR, STE 130
GREENBRAE, CA 94904

Marin County (415) 925-6900

BOBBIE HEAD M.D., PHD

Specialist

1350 S ELISEO DR, SUITE 200
GREENBRAE, CA 94904

Marin County (415) 925-5000

PRIMA MEDICAL FOUNDATION

Surgery

1350 S ELISEO DR, #210
GREENBRAE, CA 94904

Marin County (415) 925-5035

MS. LINDA RUTH CLEM PA

Physician Assistant

1350 S ELISEO DR
GREENBRAE, CA 94904

Marin County (415) 925-3590

MARIN RADIATION ONCOLOGY MEDICAL GROUP

Radiology (Radiation Oncology)

1350 S ELISEO DR, 100
GREENBRAE, CA 94904

Marin County (209) 342-2300

RIPPLE SHARMA M.D.

Specialist

1350 S ELISEO DR, 130
GREENBRAE, CA 94904

Marin County (415) 925-6900

DR. LAURY RAPPAPORT PH.D.

Marriage & Family Therapist

1350 S ELISEO DR, SUITE 120
GREENBRAE, CA 94904

Marin County (415) 461-9000

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 Natalie Lee's NPI number?

The NPI number for Natalie Lee is 1447371505. It was assigned to this individual provider in the NPPES registry on April 3, 2007.

Where is Natalie Lee located?

Natalie Lee practices at 1350 S Eliseo Dr Suite 130, Greenbrae, CA 94904. The listed phone number is (415) 925-6900.

What is Natalie Lee's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Natalie Lee enrolled in Medicare?

Yes. Natalie Lee is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Natalie Lee's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Natalie Lee reassigns Medicare benefits to Regents Univ Of California Ucsf (San Francisco, CA). The 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 Natalie Lee's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Natalie Lee was last updated on February 8, 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.