JOHN ERSKINE WELSH M.D.
NPI 1003990847
Physical Medicine & Rehabilitation in Campbell, CA
NPI Status: Active since October 25, 2006
Contact Information
429 LLEWELLYN AVE
CAMPBELL, CA
ZIP 95008
Phone: (408) 364-1616
- Individual
- Male
- Years of Experience 33
- Physical Medicine & Rehabilitation
- Accepts Medicare Approved Payment
- PECOS Enrolled
- Opted-Out Medicare
About JOHN WELSH
This page provides the complete NPI Profile along with additional information for John Welsh, a provider established in Campbell, California with a medical specialization in Physical Medicine & Rehabilitation and more than 33 years of experience. He graduated from Warren Alpert Medical School Of Brown University in 1993. The healthcare provider is registered in the NPI registry with number 1003990847 assigned on October 2006. The practitioner's primary taxonomy code is 208100000X with license number G80415 (CA). The provider is registered as an individual and his NPI record was last updated 4 years ago.
- NPI
- 1003990847
- Provider Name
- JOHN ERSKINE WELSH M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 429 LLEWELLYN AVE CAMPBELL, CA 95008
- Location Phone
- (408) 364-1616
- Mailing Address
- 429 LLEWELLYN AVE CAMPBELL, CA 95008
- Mailing Phone
- (408) 364-1616
- Medical School Name
- WARREN ALPERT MEDICAL SCHOOL OF BROWN UNIVERSITY
- Graduation Year
- 1993
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 10-25-2006
- Last Update Date
- 07-19-2022
- Code Navigator
The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. John Welsh opted out of Medicare effective on 01-01-2026 until 01-01-2028. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare but is permitted to order and refer services to other healthcare providers.
Location Map
Secondary Locations
- 2500 Hospital Dr Bldg 9
Mountain View, CA 94040
(650) 254-1200
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
Physical Medicine & Rehabilitation
- Taxonomy Code
- 208100000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- G80415
- License State
- CA
- Taxonomy Description
- Physical medicine and rehabilitation, also referred to as rehabilitation medicine, is the medical specialty concerned with diagnosing, evaluating, and treating patients with physical disabilities. These disabilities may arise from conditions affecting the musculoskeletal system such as neck and back pain, sports injuries, or other painful conditions affecting the limbs, such as carpal tunnel syndrome. Alternatively, the disabilities may result from neurological trauma or disease such as spinal cord injury, head injury or stroke. A physician certified in physical medicine and rehabilitation is often called a physiatrist. The primary goal of the physiatrist is to achieve maximal restoration of physical, psychological, social and vocational function through comprehensive rehabilitation. Pain management is often an important part of the role of the physiatrist. For diagnosis and evaluation, a physiatrist may include the techniques of electromyography to supplement the standard history, physical, x-ray and laboratory examinations. The physiatrist has expertise in the appropriate use of therapeutic exercise, prosthetics (artificial limbs), orthotics and mechanical and electrical devices.
Medicare Participation & PECOS Enrollment Status
John Welsh 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.
John Welsh 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
Opted-Out of Medicare? Yes
Opt-Out Effective Date: 01-01-2026
Opt-Out End Date: 01-01-2028
Eligible to Order and Refer? Yes
PECOS PAC ID: 9931196466
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: I20040427001727
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.
Administration of psychological or neuropsychological test by technician, first 30 minutes
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint
Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint
Established patient office or other outpatient visit, 20-29 minutes
Established patient office or other outpatient visit, 30-39 minutes
Evaluation of psychological test, first hour
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level
Injection of anesthetic and/or steroid drug into upper or middle spine nerve root using imaging guidance, each additional level
Injection of anesthetic and/or steroid drug into upper or middle spine nerve root using imaging guidance, single level
Injection of lower or sacral spine facet joint using imaging guidance, second level
Injection of lower or sacral spine facet joint using imaging guidance, single level
New patient office or other outpatient visit, 45-59 minutes
Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes
This procedure involves a trained technician administering a psychological or neuropsychological test. It's a process that assesses your mental function and behavior. The initial session will last 30 minutes. The aim is to understand your cognitive abilities better.
This service was performed 46 times for 41 patientsChronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.
This service was performed 236 times for 127 patientsThis procedure involves using imaging technology to locate and treat nerves in your lower spine or sacral area that may be causing pain. Each additional facet joint refers to treating more than one spinal nerve. It's a non-invasive way to manage chronic back pain.
This service was performed 54 times for 34 patientsThis procedure involves using imaging guidance to accurately target and destroy nerves in the lower or sacral spinal facet joint. It's done to relieve chronic back pain. The process is safe and usually effective.
This service was performed 57 times for 37 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 250 times for 153 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 537 times for 174 patientsThis procedure involves a professional assessing your mental health using standardized tests. It's the initial hour of a process that helps understand your emotional well-being and cognitive abilities. It's completely non-invasive and confidential.
This service was performed 18 times for 13 patientsThis procedure involves injecting an anesthetic or steroid drug into the sacral spine nerve root. It's done under imaging guidance to ensure accuracy. The process can be repeated for each additional level of the spine to help manage pain or inflammation.
This service was performed 79 times for 60 patientsThis procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.
This service was performed 198 times for 133 patientsThis procedure involves injecting anesthetic or steroid medication into the upper or middle spine nerve root, using imaging for precise placement. It helps alleviate pain by reducing inflammation around the nerves. Each additional level refers to treating more sections of the spine.
This service was performed 17 times for 11 patientsThis procedure involves injecting anesthetic or steroid medication into a specific nerve root in the upper or middle spine. It's performed using imaging technology for precise placement. The aim is to reduce inflammation and alleviate pain.
This service was performed 22 times for 15 patientsThis procedure involves injecting medication into the facet joints of your lower or sacral spine to manage pain. Imaging guidance ensures accurate placement. It's the second level, meaning it's done on two different joint levels.
This service was performed 23 times for 21 patientsThis procedure involves injecting medication into the facet joint in your lower back or sacral spine. It's done under imaging guidance to ensure accuracy. The aim is to alleviate pain and inflammation. It's a safe, often effective method for managing spinal discomfort.
This service was performed 26 times for 22 patientsThis 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.
This service was performed 71 times for 71 patientsThis procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.
This service was performed 241 times for 144 patientsReviews for JOHN ERSKINE WELSH M.D.
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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 1003990847, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 63 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
CAMPBELL, CA 95008
CAMPBELL, CA 95008
CAMPBELL, CA 95008
CAMPBELL, CA 95008
CAMPBELL, CA 95008
CAMPBELL, CA 95008
CAMPBELL, CA 95008
CAMPBELL, CA 95008
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1003990847, enumerated as an "individual" on October 25, 2006.
The provider is located at 429 LLEWELLYN AVE CAMPBELL, CA 95008 and the phone number is (408) 364-1616.
Physical Medicine & Rehabilitation with taxonomy code 208100000X.