DR. MICHAEL S. GREENFIELD M.D.
NPI 1295873685
Internal Medicine - Endocrinology, Diabetes & Metabolism in Mountain View, CA

Q: What is Michael Greenfield's NPI number?

The NPI number for Michael Greenfield is 1295873685. It was assigned to this individual provider in the NPPES registry on February 1, 2007.

Q: What is Michael Greenfield's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Active since February 01, 2007PECOS Enrolled

74.22/100

CMS Quality Rating

2500 HOSPITAL DR, BUILDING 14, MOUNTAIN VIEW, CA 94040(650) 965-7500 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Michael S. Greenfield M.d. NPPES

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

DR. MICHAEL S. GREENFIELD M.D. (NPI 1295873685) is an individual endocrinology, diabetes & metabolism provider in Mountain View, California, licensed in California (G35253) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (1974).

NPPES Registry Identity

NPI1295873685

Entity TypeIndividualMale

Primary Taxonomy207RE0101X

Provider Legal NameDR. MICHAEL S. GREENFIELDCredential: M.D.

Location Address2500 HOSPITAL DR, BUILDING 14Mountain View, CA 94040-4106

Mailing Address2500 Hospital Dr, Building 14Mountain View, CA 94040-4106 · (650) 965-7500

Phone(650) 965-7500

Sole ProprietorYes

Medical School CMSHarvard Medical SchoolGraduated 1974

Enumeration DateFebruary 1, 2007

Last NPPES UpdateJuly 8, 2007

✔ NPI 1295873685 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in CA · G35253

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

2500 HOSPITAL DR, Mountain View, CA 94040

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Other Identifiers 1

Medicare UPINA46280

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Michael S. Greenfield M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8729141916

PECOS Enrollment IDI20090114000534

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 3

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.

628 services213 patients

Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251

This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.

42 services26 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

21 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94040 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

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

Established Patient

$121.77 typical visit price

range $23.96 – $169.60

Typical copayment $30.44 (range $5.99 – $42.40)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

74.22/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

66.71

Improvement Activities

Cost

58.46

Reported Quality Measures

Colorectal Cancer Screening

31%142 patients2/55-star benchmark: 88%

Controlling High Blood Pressure

48%87 patients3/55-star benchmark: 91%

Diabetes: Eye Exam

0%79 patients1/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

16%79 patients4/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

97%297 patients4/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

30%74 patients2/55-star benchmark: 98%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

18%50 patients2/55-star benchmark: 61%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

72%155 patients3/55-star benchmark: 91%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 0% · 130 patients

Patients totalRate: 8% · 131 patients

8%131 patients4/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 6

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

Supplies for maintenance of insulin infusion catheter, per week A4224