SARA MATHEW HOLMES MD
NPI 1801174479
Internal Medicine - Nephrology in Novato, CA

NPI Status: Active since July 29, 2011

Contact Information

97 SAN MARIN DR
NOVATO, CA
ZIP 94945
Phone: (415) 899-7880
Fax: (415) 899-7815

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  • Individual
  • Female
  • Years of Experience 20
  • Internal Medicine
  • Nephrology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About SARA HOLMES

This page provides the complete NPI Profile along with additional information for Sara Holmes, an internist established in Novato, California with a medical specialization in Internal Medicine, focusing in nephrology and more than 20 years of experience. She graduated from Temple University School Of Medicine in 2006. The healthcare provider is registered in the NPI registry with number 1801174479 assigned on July 2011. The practitioner's primary taxonomy code is 207RN0300X with license number A133361 (CA). The provider is registered as an individual and her NPI record was last updated 2 years ago.

NPI
1801174479
Provider Name
SARA MATHEW HOLMES MD
Gender
Female
Entity Type
Individual
Location Address
97 SAN MARIN DR NOVATO, CA 94945
Location Phone
(415) 899-7880
Location Fax
(415) 899-7815
Mailing Address
97 SAN MARIN DR NOVATO, CA 94945
Mailing Phone
(415) 899-7880
Mailing Fax
(415) 899-7815
Medical School Name
TEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduation Year
2006
Is Sole Proprietor?
No
Enumeration Date
07-29-2011
Last Update Date
11-08-2023
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An internist like Sara Holmes is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Nephrology

Taxonomy Code
207RN0300X
Type
Allopathic & Osteopathic Physicians
License No.
A133361
License State
CA
Taxonomy Description
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207RN0300XAllopathic & Osteopathic Physicians

Internal Medicine
Nephrology

MD443610 (PA)

Medicare Participation & PECOS Enrollment Status

Sara Holmes is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Sara Holmes is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 8426229972

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20150526001126

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Colonoscopy

A colonoscopy is a medical procedure that allows your doctor to examine your colon (the large intestine). It utilizes a thin, flexible tube with a tiny camera on the end, which is inserted through the rectum. This procedure can help identify issues such as polyps, inflammation, or early signs of cancer. It's usually recommended for people over 50 or those with specific risk factors.

This service was performed for 1-10 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $38.51 for a new patient copayment and $29.9 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 94945 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $154.04
  • Minimum New Patient Price $69.07
  • Maximum New Patient Price $202.63
  • Average New Patient Copayment $38.51
  • Minimum New Patient Copayment $17.26
  • Maximum New Patient Copayment $50.65

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $119.61
  • Minimum Established Patient Price $23.44
  • Maximum Established Patient Price $166.64
  • Average Established Patient Copayment $29.9
  • Minimum Established Patient Copayment $5.86
  • Maximum Established Patient Copayment $41.66

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Reviews for SARA MATHEW HOLMES MD

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1801174479
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2801278414
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 8 + 0 + 1 + 2 + 7 + 8 + 4 + 1 + 4 + 24 = 61
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
70 - 61 = 99

The NPI number 1801174479 is valid because the calculated check digit 9 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 20 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1093816241 BARBARA DORAN NP
Individual
Nurse Practitioner97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7411
1891888467DR. GAYLE YM LAU PHARM.D
Individual
Pharmacist97 SAN MARIN DR
NOVATO, CA 94945
(415) 893-4100
1659464212DR. ALEXANDER HUEY PHARM D
Individual
Pharmacist97 SAN MARIN DR
NOVATO, CA 94945
(415) 444-2284
1013001916MS. ZIBA ANSARI-JABERI PHARM.D.
Individual
Pharmacist97 SAN MARIN DR
NOVATO, CA 94945
(415) 893-4040
1841374915 VICKI DARROW MD
Individual
Obstetrics & Gynecology97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7400
1801970876 SHAWN M. DONALD MD
Individual
Internal Medicine97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7400
1043394018 DONALD A. PIERCE MD
Individual
Internal Medicine (Rheumatology)97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7400
1023192002 JEAN VIERRA MD
Individual
Obstetrics & Gynecology97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7400
1093899072 ROBERT J. LAVAYSSE MD
Individual
Internal Medicine97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7400
1144304122 WILLIAM T. ELLIOTT MD
Individual
Internal Medicine97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7400
1952485930 LORI Z. SELLECK MD
Individual
Internal Medicine97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7400
1861576860 AMY J. EWING MD
Individual
Internal Medicine97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7400
1922187053 DENNIS SHIGERU MORIBE MD
Individual
Pediatrics97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7400
1487722534KAISER
Organization
Clinic/Center (Ambulatory Family Planning Facility)97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7580
1285786038DR. DENNIS LANE PALM O.D.
Individual
Optometrist97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7559
1932246220MRS. JANE ELIZABETH BURR RN
Individual
Registered Nurse (Diabetes Educator)97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7655
1679797674MR. SPENCER ALVIN LEE PHARM. D.
Individual
Pharmacist97 SAN MARIN DR
NOVATO, CA 94945
(415) 444-2284
1265756704 JOANNE ARAUZO PHARM D
Individual
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7614
1306189980 KATRINA A. WOO CABARRUS M.D.
Individual
Pediatrics97 SAN MARIN DR
NOVATO, CA 94945
(415) 858-2152
1184158057 ELIZABETH CROUTHAMEL
Individual
Pharmacist97 SAN MARIN DR
NOVATO, CA 94945
(415) 899-7614

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1801174479, enumerated in the NPI registry as an "individual" on July 29, 2011

The provider is located at 97 San Marin Dr Novato, Ca 94945 and the phone number is (415) 899-7880

The provider's speciality is Internal Medicine with taxonomy code 207RN0300X with a focus in Nephrology

The provider has more than 20 years of experience. She graduated from Temple University School Of Medicine in 2006.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

Medicare beneficiaries should expect a typical cost of $154.04 with an average copayment of $38.51 for new patient appointments. Established patients should expect a typical charge of $119.61 and an average copayment of 29.9. Please review your insurance plan or contact the provider directly to determine your specific costs.

The most common procedures or services performed by this practitioner are: Colonoscopy.

This NPI record was last updated on July 29, 2011. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.