DR. SHERRI RAUENZAHN CERVANTEZ M.D.
NPI 1760708291
Internal Medicine - Medical Oncology in San Antonio, TX

NPI Status: Active since April 08, 2010

Contact Information

7979 WURZBACH RD
SAN ANTONIO, TX
ZIP 78229
Phone: (210) 450-1143

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  • Individual
  • Female
  • Years of Experience 16
  • Internal Medicine
  • Medical Oncology
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About SHERRI CERVANTEZ

This page provides the complete NPI Profile along with additional information for Sherri Cervantez, an internist established in San Antonio, Texas with a medical specialization in Internal Medicine, focusing in medical oncology and more than 16 years of experience. The healthcare provider is registered in the NPI registry with number 1760708291 assigned on April 2010. The practitioner's primary taxonomy code is 207RX0202X with license number R3044 (TX). The provider is registered as an individual and her NPI record was last updated April 2026.

NPI
1760708291
Provider Name
DR. SHERRI RAUENZAHN CERVANTEZ M.D.
Other Name
DR. SHERRI LYNNE RAUENZAHN MD
Other Name Type
Former Name (1)
Gender
Female
Entity Type
Individual
Location Address
7979 WURZBACH RD SAN ANTONIO, TX 78229
Location Phone
(210) 450-1143
Mailing Address
7703 FLOYD CURL DR SAN ANTONIO, TX 78229
Mailing Phone
(210) 450-1143
Medical School Name
OTHER
Graduation Year
2010
Is Sole Proprietor?
No
Enumeration Date
04-08-2010
Last Update Date
04-07-2026
Code Navigator

An internist like Sherri Cervantez 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 Medical Oncology

Taxonomy Code
207RX0202X
Type
Allopathic & Osteopathic Physicians
License No.
R3044
License State
TX
Taxonomy Description
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

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)
1207RH0002XAllopathic & Osteopathic Physicians

Internal Medicine
Hospice and Palliative Medicine

R3044 (TX)
2207RH0003XAllopathic & Osteopathic Physicians

Internal Medicine
Hematology & Oncology

R3044 (TX)

Insurance Plans Accepted

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

  • Blue Advantage Bronze HMO? 204 - HMO
  • Blue Advantage Bronze HMO? 301 - HMO
  • Blue Advantage Bronze HMO? Standard - HMO
  • Blue Advantage Gold HMO? 206 - HMO
  • Blue Advantage Gold HMO? 603 - HMO
  • Blue Advantage Gold HMO? Standard - HMO
  • Blue Advantage Plus Bronze? 303 - POS
  • Blue Advantage Plus Bronze? 305 - POS
  • Blue Advantage Plus Bronze? Standard - POS
  • Blue Advantage Plus Gold? 203 - POS
  • Blue Advantage Plus Gold? 803 - POS
  • Blue Advantage Plus Gold? Standard - POS
  • Blue Advantage Plus Silver? 202 - POS
  • Blue Advantage Plus Silver? 605 - POS
  • Blue Advantage Plus Silver? Standard - POS
  • Blue Advantage Security HMO? 200 - HMO
  • Blue Advantage Silver HMO? 205 - HMO
  • Blue Advantage Silver HMO? 801 - HMO
  • Blue Advantage Silver HMO? Standard - HMO
  • Imperial Preferred Bronze - HMO
  • Imperial Preferred Gold - HMO
  • Imperial Preferred Gold Zero - HMO
  • Imperial Preferred Silver - HMO
  • Imperial Standard Bronze - HMO
  • Imperial Standard Gold - HMO
  • Imperial Standard Silver - HMO
  • Molina Gold Core 1640 - HMO
  • Molina Gold Core 1640 Plus with Adult Dental and Vision - HMO
  • Molina Gold Core 1640 Plus with Adult Vision - HMO
  • Molina Gold Saver 750 - HMO
  • Molina Gold Saver 750 Plus with Adult Dental and Vision - HMO
  • Molina Gold Saver 750 Plus with Adult Vision - HMO
  • Molina Gold Standard - HMO
  • Molina Silver Core - HMO
  • Molina Silver Core Plus with Adult Dental and Vision - HMO
  • Molina Silver Core Plus with Adult Vision - HMO
  • Molina Silver Saver with Four Free PCP Visits - HMO
  • Molina Silver Standard - HMO

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
371818101MEDICAID (05)TX 
371818102OTHER (01)TXCSHCN

Medicare Participation & PECOS Enrollment Status

Sherri Cervantez 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.

Sherri Cervantez 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: 8820239874

    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: I20170619002634

    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 chemotherapy into vein, 1 hour or less

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

This service was performed 71 times for 56 patients

Administration of chemotherapy into vein, each additional hour

Chemotherapy is a treatment method that uses drugs to destroy cancer cells. The drugs are administered into a vein, usually in the arm. Each additional hour of chemotherapy allows for more of the medication to enter your bloodstream to fight against the cancer cells.

This service was performed 22 times for 13 patients

Bcg live intravesical instillation, 1 mg

BCG live intravesical instillation is a procedure where a weakened form of a bacteria is introduced into your bladder. This helps your body's immune system to fight off certain bladder conditions. The procedure is generally safe and effective.

This service was performed 667 times for 11 patients

Chemotherapy administration, intravenous infusion technique; initiation of infusion in the office/clinic setting using office/clinic pump/supplies, with continuation of the infusion in the community setting (e.g., home, domiciliary, rest home or assisted l

Chemotherapy is a treatment method that uses drugs to destroy cancer cells. In the office, a pump is used to start an intravenous infusion of these drugs. The infusion can then be continued at home or another setting, like a rest home.

This service was performed 22 times for 14 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 110 times for 62 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 62 times for 34 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 50 times for 26 patients

Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less

This procedure involves injecting fluids or medication directly into your vein. It's used for treatment, prevention, or diagnosis. An additional sequential infusion may be given within an hour if needed. This helps to ensure the medicine is distributed effectively in your body.

This service was performed 43 times for 27 patients

Initial hospital inpatient care per day, typically 50 minutes

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

This service was performed 32 times for 29 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 11 times for 11 patients

Injection of additional new drug or substance into vein

This procedure involves introducing a new medication or substance into your bloodstream via a vein. It's typically done using a small needle. The substance can help treat various conditions or assist in diagnostic procedures. It's generally safe and monitored by professionals.

This service was performed 75 times for 33 patients

Injection, dexamethasone sodium phosphate, 1 mg

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

This service was performed 368 times for 26 patients

Injection, diphenhydramine hcl, up to 50 mg

Diphenhydramine HCL injection is a medicine given to alleviate symptoms of allergies, colds, or hay fever. It can also help with motion sickness and certain symptoms of Parkinson's disease. Up to 50 mg may be administered depending on your condition.

This service was performed 12 times for 11 patients

Injection, fluorouracil, 500 mg

Fluorouracil is a chemotherapy drug, given as an injection to treat various types of cancer. The 500 mg dose helps to stop cancer cells from growing and multiplying. You might feel some side effects, but these are typically manageable.

This service was performed 224 times for 14 patients

Injection, fosaprepitant, 1 mg

Fosaprepitant is an anti-nausea medication given via injection. It's often used to prevent nausea and vomiting caused by chemotherapy. This injection blocks signals to the brain that trigger these symptoms, helping you feel better.

This service was performed 1,800 times for 11 patients

Injection, ondansetron hydrochloride, per 1 mg

Ondansetron hydrochloride is a medication given via injection to help prevent nausea and vomiting, often due to chemotherapy or surgery. It works by blocking certain chemicals in the body that trigger these symptoms.

This service was performed 492 times for 24 patients

Instillation of anti-cancer drug into bladder

This procedure involves introducing a medication into the bladder to help fight off harmful cells. A small tube is gently placed into the area where urine exits the body. Through this tube, the medication is delivered directly into the bladder for maximum effectiveness.

This service was performed 20 times for 17 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $41.72 for a new patient copayment and $24.26 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 78229 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99205

  • Average New Patient Price $166.88
  • Minimum New Patient Price $54.84
  • Maximum New Patient Price $166.88
  • Average New Patient Copayment $41.72
  • Minimum New Patient Copayment $13.71
  • Maximum New Patient Copayment $41.72

Established Patients Visit Costs *

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

  • Average Established Patient Price $97.05
  • Minimum Established Patient Price $17.52
  • Maximum Established Patient Price $136.11
  • Average Established Patient Copayment $24.26
  • Minimum Established Patient Copayment $4.38
  • Maximum Established Patient Copayment $34.02

* 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.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Sherri Cervantez is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
UNIVERSITY HEALTH SYSTEM4502 MEDICAL DR
SAN ANTONIO, TX 78229
(210) 358-2637Acute Care Hospitals

Reviews for DR. SHERRI RAUENZAHN CERVANTEZ 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 1760708291, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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
6
Doubled → 12 → 1 + 2
Pos 4
0
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
0
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
2
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
1
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 6 → 12 → 3 7 → 14 → 5 8 → 16 → 7 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 2 + 0 + 1 + 4 + 0 + 1 + 6 + 2 + 1 + 8 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1760708291.

Other Providers at the Same Location


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

Internal Medicine (Hematology & Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Internal Medicine (Medical Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Internal Medicine (Hematology & Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Internal Medicine (Medical Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Internal Medicine (Medical Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Internal Medicine (Medical Oncology)
7979 WURZBACH RD, Z 4TH FLOOR
SAN ANTONIO, TX 78229
Pharmacist
7979 WURZBACH RD, GCC354
SAN ANTONIO, TX 78229
Pharmacist
7979 WURZBACH RD, SUITE G354
SAN ANTONIO, TX 78229
Pharmacist
7979 WURZBACH RD, SUITE G354
SAN ANTONIO, TX 78229
Pharmacist
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Internal Medicine (Hematology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Pathology (Anatomic Pathology & Clinical Pathology)
7979 WURZBACH RD, Z 4TH FLOOR
SAN ANTONIO, TX 78229
Internal Medicine (Medical Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Otolaryngology
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Social Worker (Clinical)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Physician Assistant (Medical)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Surgery (Surgical Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Thoracic Surgery (Cardiothoracic Vascular Surgery)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Radiology (Radiation Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229
Internal Medicine (Hematology & Oncology)
7979 WURZBACH RD
SAN ANTONIO, TX 78229

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1760708291, enumerated as an "individual" on April 08, 2010.

The provider is located at 7979 WURZBACH RD SAN ANTONIO, TX 78229 and the phone number is (210) 450-1143.

Internal Medicine with taxonomy code 207RX0202X and a focus in Medical Oncology.

The provider might be accepting Accepts: Blue Cross and Blue Shield of Texas, Imperial. Please consult your insurance carrier or call the provider to verify.

Sherri Cervantez is affiliated with: UNIVERSITY HEALTH SYSTEM.