MARSHA FELDMAN ARMSTRONG MD
NPI 1417041765
Internal Medicine in Los Gatos, CA

NPI Status: Active since October 03, 2006

Contact Information

777 KNOWLES DR
SUITES 6A
LOS GATOS, CA
ZIP 95032
Phone: (408) 370-3611
Fax: (408) 370-3688

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  • Individual
  • Female
  • Internal Medicine

About MARSHA ARMSTRONG

This page provides the complete NPI Profile along with additional information for Marsha Armstrong, an internist established in Los Gatos, California with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1417041765 assigned on October 2006. The practitioner's primary taxonomy code is 207R00000X with license number G14057 (CA). The provider is registered as an individual and her NPI record was last updated 13 years ago.

NPI
1417041765
Provider Name
MARSHA FELDMAN ARMSTRONG MD
Gender
Female
Entity Type
Individual
Location Address
777 KNOWLES DR SUITES 6A LOS GATOS, CA 95032
Location Phone
(408) 370-3611
Location Fax
(408) 370-3688
Mailing Address
777 KNOWLES DR SUITES 6A LOS GATOS, CA 95032
Mailing Phone
(408) 370-3611
Mailing Fax
(408) 370-3688
Is Sole Proprietor?
Yes
Enumeration Date
10-03-2006
Last Update Date
03-20-2013
Code Navigator

An internist like Marsha Armstrong 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

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
G14057
License State
CA
Taxonomy Description
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.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
00G140570OTHER (01)CAMEDICARE PTAN
2063817MEDICAID (05)CA 
A39161MEDICARE UPIN (02) 

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.

Established patient office or other outpatient visit, 10-19 minutes

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

This service was performed 25 times for 15 patients

Established patient office or other outpatient visit, 20-29 minutes

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.

This service was performed 31 times for 21 patients

Established patient office or other outpatient visit, 30-39 minutes

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.

This service was performed 154 times for 53 patients

Established patient office or other outpatient visit, 40-54 minutes

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.

This service was performed 52 times for 41 patients

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1417041765, we treat the final digit (5) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 5).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
4
Unchanged
Pos 3
1
Doubled → 2
Pos 4
7
Unchanged
Pos 5
0
Doubled → 0
Pos 6
4
Unchanged
Pos 7
1
Doubled → 2
Pos 8
7
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
5
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 1 → 2 0 → 0 1 → 2 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 4 + 2 + 7 + 0 + 4 + 2 + 7 + 1 + 2 + 24 = 55

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 55 is 60. The difference is the calculated check digit.

60 - 55 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1417041765.

Other Providers at the Same Location


The following 9 providers are registered at the same or a nearby location.

Obstetrics & Gynecology
777 KNOWLES DR, SUITE 7
LOS GATOS, CA 95032
Orthopaedic Surgery (Sports Medicine)
777 KNOWLES DR, SUITE # 9
LOS GATOS, CA 95032
Physical Therapist
777 KNOWLES DR, SUITE 6B
LOS GATOS, CA 95032
Physical Therapist (Orthopedic)
777 KNOWLES DR, SUITE 10
LOS GATOS, CA 95032
Naturopath
777 KNOWLES DR, SUITE 6B
LOS GATOS, CA 95032
Dermatology
777 KNOWLES DR, SUITE 16
LOS GATOS, CA 95032
Specialist
777 KNOWLES DR, SUITE #10
LOS GATOS, CA 95032
Orthopaedic Surgery
777 KNOWLES DR, #15
LOS GATOS, CA 95032
Acupuncturist
777 KNOWLES DR, SUITE 6B
LOS GATOS, CA 95032

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1417041765, enumerated as an "individual" on October 03, 2006.

The provider is located at 777 KNOWLES DR SUITES 6A LOS GATOS, CA 95032 and the phone number is (408) 370-3611.

Internal Medicine with taxonomy code 207R00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.