RUTH KERSHAW PHYSICIAN ASSISTANT
NPI 1932676384
Physician Assistant in San Francisco, CA
Quality Rating: 75.66 out of 100 score
NPI Status: Active since October 24, 2018
Contact Information
3838 CALIFORNIA ST RM 715
SAN FRANCISCO, CA
ZIP 94118
Phone: (415) 668-8010
- Individual
- Female
- Physician Assistant
- PECOS Enrolled
About RUTH KERSHAW
This page provides the complete NPI Profile along with additional information for Ruth Kershaw, a primary care provider established in San Francisco, California with a medical specialization in Physician Assistant. The healthcare provider is registered in the NPI registry with number 1932676384 assigned on October 2018. The practitioner's primary taxonomy code is 363A00000X with license number 56183 (CA). The provider is registered as an individual and her NPI record was last updated 3 years ago.
- NPI
- 1932676384
- Provider Name
- RUTH KERSHAW PHYSICIAN ASSISTANT
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118
- Location Phone
- (415) 668-8010
- Mailing Address
- 175 21ST AVE APT 205 SAN FRANCISCO, CA 94121
- Mailing Phone
- (415) 622-5047
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-24-2018
- Last Update Date
- 07-19-2022
- Code Navigator
A primary care provider (PCP) like Ruth Kershaw sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, 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
Physician Assistant
- Taxonomy Code
- 363A00000X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- License No.
- 56183
- License State
- CA
- Taxonomy Description
- A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare Participation & PECOS Enrollment Status
Ruth Kershaw 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
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.
Advance care planning, first 30 minutes
Aspiration and/or injection of fluid from large joint
Established patient office or other outpatient visit, 20-29 minutes
Established patient office or other outpatient visit, 30-39 minutes
Established patient office or other outpatient visit, 40-54 minutes
Replacement of knee joint, both sides of knee
Replacement of thigh bone and hip joint with prosthesis
X-ray of knee, 3 views
X-ray of pelvis, 1-2 views
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
This service was performed 58 times for 58 patientsThis procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.
This service was performed 16 times for 14 patientsThis 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 38 times for 36 patientsThis 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 63 times for 61 patientsThis 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 40 times for 40 patientsA bilateral knee joint replacement is a procedure where the damaged parts of both your knee joints are replaced with artificial parts. It aims to relieve pain and improve mobility. The process involves a surgical operation under anesthesia.
This service was performed 14 times for 14 patientsThis procedure, known as hip arthroplasty, involves replacing your damaged thigh bone and hip joint with artificial parts, called a prosthesis. It helps relieve pain, improve mobility, and enhance your quality of life.
This service was performed 30 times for 29 patientsAn X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.
This service was performed 60 times for 48 patientsAn X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.
This service was performed 77 times for 64 patientsPhysician Visit Costs
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 94118 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99203
- Average New Patient Price $104.51
- Minimum New Patient Price $69
- Maximum New Patient Price $202.35
- Average New Patient Copayment $26.12
- Minimum New Patient Copayment $17.25
- Maximum New Patient Copayment $50.58
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99213
- Average Established Patient Price $84.91
- Minimum Established Patient Price $23.44
- Maximum Established Patient Price $166.46
- Average Established Patient Copayment $21.22
- Minimum Established Patient Copayment $5.86
- Maximum Established Patient Copayment $41.61
* 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.
Overall MIPS Quality Performance
The provider participated in CMS Quality Payment Program under the Merit-based Incentive Payment System (MIPS) and has an overall final score of 75.66, based on four performance areas: quality, improvement activities, promoting interoperability, and cost. The purpose of this information is to help people with Medicare make informed decisions and incentivize doctors and clinicians to maximize performance.
The Merit-based Incentive Payment System (MIPS) is a way providers could use to participate in CMS Quality Payment Program (QPP). The MIPS program affects clinician reimbursement for Part B covered professional services and also rewards them for improving the quality of patient care and outcomes.
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Final Score: 75.66 out of 100
The MIPS program evaluates providers across multiple categories with a specific weight for each category resulting a in a MIPS final score that ranges from 0 to 100 points. The MIPS Final Score determines whether providers receive a negative, neutral or positive MIPS payment adjustment.
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Quality Score: 71.26
The Quality category assesses providers performance on clinical practices and patient outcomes under the traditional MIPS program. The quality measures help identify the quality of healthcare processes, outcomes, and patient experiences. The Quality measure category compromises 40% providers final MPIS scores.
There are six collection types for MIPS quality measures: Electronic Clinical Quality Measures (eCQMs), MIPS Clinical Quality Measures (CQMs), Qualified Clinical Data Registry (QCDR) Measures, Medicare Part B claims measures, CMS Web Interface measures and The Consumer Assessment of Healthcare Providers and Systems (CAHPS) for MIPS Survey.
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Promoting Interoperability Score: 76
The Interoperability category measures the providers ability to use technology to exchange and make use of healthcare information in a way that is less burdensome and improves outcomes. The Interoperability measure category compromises 25% providers final MPIS scores.
The MIPS Interoperability measure focuses on the use of certified electronic health record technology (CEHRT) to improve patient access health information, the exchange of information between clinicians and pharmacies and the systematic collection, analysis, and interpretation of healthcare data. -
Improvement Activities Score: 40
The Improvement Activities performance category evaluates the providers participation in clinical activities that support the improvement of clinical practice, care delivery, and outcomes. Providers have the option to choose 2 to 4 activities from an inventory of over 100 improvement activities. Providers typically choose the activities that best fit their needs. The improvement activities measure category compromises 15% providers final MPIS scores.
The Improvement measures aim to better patient engagement, patient safety and other areas of patient care. The Improvement Activities category compromises 15% of providers final MPIS scores. -
Cost Score: 67.6
The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.
Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores. -
Cost Score: 67.6
The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.
Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.
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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. | |||||||||
1 | 9 | 3 | 2 | 6 | 7 | 6 | 3 | 8 | 4 |
Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
2 | 9 | 6 | 2 | 12 | 7 | 12 | 3 | 16 | |
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
2 + 9 + 6 + 2 + 1 + 2 + 7 + 1 + 2 + 3 + 1 + 6 + 24 = 66 | |||||||||
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
70 - 66 = 4 | 4 |
The NPI number 1932676384 is valid because the calculated check digit 4 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 18 providers are registered at the same or nearby location.
NPI | Name / Type | Taxonomy | Address |
---|---|---|---|
1689261620 | MACKENZIE JASSOWSKI PA-C Individual | Physician Assistant | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 592-2091 |
1720651508 | JUSTIN MATUSALEM Individual | Physician Assistant | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (858) 740-0275 |
1720491673 | PHILIP BURNS KAISER MD Individual | Orthopaedic Surgery | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1528557568 | MR. JAMES ALFRED AICARDI PA-C Individual | Physician Assistant (Surgical) | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1013908979 | JAMES DAMIAN KELLY II MD Individual | Orthopaedic Surgery | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1073743233 | DR. MARK IVAN IGNATIUS D.O. Individual | Physical Medicine & Rehabilitation | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1154660280 | MARK A. SCHRUMPF MD A PROFESSIONAL CORPORATION Organization | Orthopaedic Surgery | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1497919401 | JOHNNA NICOLE WALKER PA-C Individual | Physician Assistant (Surgical) | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1528206497 | LINDSEY VALONE M.D. Individual | Orthopaedic Surgery | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1538732417 | MS. LAUREN TAYLOR KIM PHYSICIAN ASSISTANT Individual | Physician Assistant (Surgical) | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1548452782 | DR. KEITH WEI CHAN M.D. Individual | Orthopaedic Surgery (Sports Medicine) | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1902565088 | DANIEL JOSEPH NGUYEN PA-C Individual | Physician Assistant | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1750469532 | KENNETH TRAUNER MD Individual | Orthopaedic Surgery | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1467648139 | DR. MARK ALAN SCHRUMPF M.D. Individual | Orthopaedic Surgery | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1811531023 | VIRGINIA HILYARD HOPTMAN PA-C Individual | Physician Assistant (Surgical) | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1801673660 | ISABELLA ROSE SANCHEZ PA Individual | Physician Assistant | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1609503861 | MR. MARCUS PADDOCK SCHWAB PA Individual | Physician Assistant | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
1669030458 | SEYED ARSHAN ARSHAD DO Individual | Orthopaedic Surgery | 3838 CALIFORNIA ST RM 715 SAN FRANCISCO, CA 94118 (415) 668-8010 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1932676384, enumerated in the NPI registry as an "individual" on October 24, 2018
The provider is located at 3838 California St Rm 715 San Francisco, Ca 94118 and the phone number is (415) 668-8010
The provider's speciality is Physician Assistant with taxonomy code 363A00000X
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 $104.51 with an average copayment of $26.12 for new patient appointments. Established patients should expect a typical charge of $84.91 and an average copayment of 21.22. 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: Advance care planning, first 30 minutes, Aspiration and/or injection of fluid from large joint, Established patient office or other outpatient visit, 20-29 minutes, Established patient office or other outpatient visit, 30-39 minutes, Established patient office or other outpatient visit, 40-54 minutes, Replacement of knee joint, both sides of knee, Replacement of thigh bone and hip joint with prosthesis, X-ray of knee, 3 views and X-ray of pelvis, 1-2 views.
This NPI record was last updated on October 24, 2018. 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].
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