JENNIFER ELLEN GUY M.D.
NPI 1710137872
Internal Medicine - Transplant Hepatology in San Francisco, CA

NPI Status: Active since September 25, 2008

Contact Information

1100 VAN NESS AVE
SAN FRANCISCO, CA
ZIP 94109
Phone: (415) 600-1000
Fax: (415) 558-7051

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  • Individual
  • Female
  • Years of Experience 24
  • Internal Medicine
  • Transplant Hepatology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About JENNIFER GUY

This page provides the complete NPI Profile along with additional information for Jennifer Guy, an internist established in San Francisco, California with a medical specialization in Internal Medicine, focusing in transplant hepatology and more than 24 years of experience. The healthcare provider is registered in the NPI registry with number 1710137872 assigned on September 2008. The practitioner's primary taxonomy code is 207RT0003X with license number A86055 (CA). The provider is registered as an individual and her NPI record was last updated 6 years ago.

NPI
1710137872
Provider Name
JENNIFER ELLEN GUY M.D.
Gender
Female
Entity Type
Individual
Location Address
1100 VAN NESS AVE SAN FRANCISCO, CA 94109
Location Phone
(415) 600-1000
Location Fax
(415) 558-7051
Mailing Address
325 DISTEL CIR LOS ALTOS, CA 94022
Mailing Phone
(415) 600-1000
Mailing Fax
(415) 558-7051
Medical School Name
OTHER
Graduation Year
2002
Is Sole Proprietor?
No
Enumeration Date
09-25-2008
Last Update Date
11-16-2020
Code Navigator

An internist like Jennifer Guy 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

Secondary Locations

  • 3300 Webster St Ste 202
    Oakland, CA 94609
    (510) 208-1777
  • 701 E El Camino Real
    Mountain View, CA 94040
    (415) 600-1000

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 Transplant Hepatology

Taxonomy Code
207RT0003X
Type
Allopathic & Osteopathic Physicians
License No.
A86055
License State
CA
Taxonomy Description
An internist with special knowledge and the skill required of a gastroenterologist to care for patients prior to and following hepatic transplantation that spans all phases of liver transplantation. Selection of appropriate recipients requires assessment by a team having experience in evaluating the severity and prognosis of patients with liver disease.

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)
1207RG0100XAllopathic & Osteopathic Physicians

Internal Medicine
Gastroenterology

A86055 (CA)
2207RI0008XAllopathic & Osteopathic Physicians

Internal Medicine
Hepatology

A86055 (CA)

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
A86055OTHER (01)CASTATE MEDICAL LICENSE

Medicare Participation & PECOS Enrollment Status

Jennifer Guy 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.

Jennifer Guy 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: 9335291640

    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: I20090717000303

    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

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Unknown

  • Treatment-Treatment - Miscellaneous (RX029N)

    Tacrolimus, immediate release, oral, 1 mg (HCPCS:J7507)

    10 DME suppliers used 175 Medicare Claims 15739 Services Paid

  • Treatment-Treatment - Miscellaneous (RX029N)

    Prednisone, immediate release or delayed release, oral, 1 mg (HCPCS:J7512)

    1 DME suppliers used 16 Medicare Claims 3700 Services Paid

  • Treatment-Treatment - Miscellaneous (RX029N)

    Mycophenolate mofetil, oral, 250 mg (HCPCS:J7517)

    2 DME suppliers used 50 Medicare Claims 5460 Services Paid

  • Treatment-Treatment - Miscellaneous (RX029N)

    Mycophenolic acid, oral, 180 mg (HCPCS:J7518)

    2 DME suppliers used 25 Medicare Claims 2280 Services Paid

  • Treatment-Chemotherapy (RH012N)

    Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period (HCPCS:Q0511)

    11 DME suppliers used 167 Medicare Claims 167 Services Paid

  • Treatment-Chemotherapy (RH012N)

    Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period (HCPCS:Q0512)

    8 DME suppliers used 113 Medicare Claims 149 Services Paid

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

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 15 times for 12 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 25 times for 20 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 217 times for 102 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 20 times for 18 patients

Follow-up hospital inpatient care per day, typically 25 minutes

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

This service was performed 18 times for 14 patients

Follow-up hospital inpatient care per day, typically 35 minutes

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

This service was performed 166 times for 47 patients

Initial hospital inpatient care per day, typically 70 minutes

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

This service was performed 29 times for 29 patients

New patient office or other outpatient visit, 60-74 minutes

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.

This service was performed 21 times for 21 patients

Upper gastrointestinal (GI) endoscopy for acid reflux

An upper GI endoscopy is a procedure to examine your esophagus and stomach using a thin, flexible tube called an endoscope. It helps diagnose conditions like acid reflux by identifying any inflammation or damage. It's generally safe, performed under sedation, and takes about 15-30 minutes.

This service was performed for 1-10 patients

Reviews for JENNIFER ELLEN GUY 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 1710137872, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
7
Unchanged
Pos 3
1
Doubled → 2
Pos 4
0
Unchanged
Pos 5
1
Doubled → 2
Pos 6
3
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
8
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
2
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 1 → 2 7 → 14 → 5 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 2 + 0 + 2 + 3 + 1 + 4 + 8 + 1 + 4 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1710137872.

Other Providers at the Same Location


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

Surgery
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Psychiatry & Neurology (Vascular Neurology)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Internal Medicine (Hospice and Palliative Medicine)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Thoracic Surgery (Cardiothoracic Vascular Surgery)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Hospitalist
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Physician Assistant (Surgical)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Hospitalist
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Psychiatry & Neurology (Neurology)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Neurological Surgery
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Neurological Surgery
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Obstetrics & Gynecology
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Obstetrics & Gynecology
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Physician Assistant
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Transplant Surgery
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Internal Medicine (Transplant Hepatology)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Internal Medicine (Transplant Hepatology)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Internal Medicine (Transplant Hepatology)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
Psychiatry & Neurology (Neurology)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1710137872, enumerated as an "individual" on September 25, 2008.

The provider is located at 1100 VAN NESS AVE SAN FRANCISCO, CA 94109 and the phone number is (415) 600-1000.

Internal Medicine with taxonomy code 207RT0003X and a focus in Transplant Hepatology.

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