DR. MICHAEL SEAN DUFFY SR. DO
NPI 1851399802
Internal Medicine in San Diego, CA
NPI Status: Active since July 13, 2005
Contact Information
1501 5TH AVE STE 100
SAN DIEGO, CA
ZIP 92101
Phone: (619) 647-5072
Fax: (619) 330-4782
- Individual
- Male
- Internal Medicine
- PECOS Enrolled
About MICHAEL DUFFY
This page provides the complete NPI Profile along with additional information for Michael Duffy, an internist established in San Diego, California with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1851399802 assigned on July 2005. The practitioner's primary taxonomy code is 207R00000X with license number 20A9616 (CA). The provider is registered as an individual and his NPI record was last updated 4 years ago.
- NPI
- 1851399802
- Provider Name
- DR. MICHAEL SEAN DUFFY SR. DO
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1501 5TH AVE STE 100 SAN DIEGO, CA 92101
- Location Phone
- (619) 647-5072
- Location Fax
- (619) 330-4782
- Mailing Address
- 1501 5TH AVE STE 100 SAN DIEGO, CA 92101
- Mailing Phone
- (619) 647-5072
- Mailing Fax
- (619) 330-4782
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 07-13-2005
- Last Update Date
- 09-22-2022
- Code Navigator
An internist like Michael Duffy 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.
- 20A9616
- 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.
Medicare Participation & PECOS Enrollment Status
Michael Duffy 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.
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
Aspiration and/or injection of fluid large joint using ultrasound guidance
Established patient office or other outpatient visit, 20-29 minutes
Established patient office or other outpatient visit, 30-39 minutes
Exam of neurobehavioral status, first hour
Injection of drug or substance under skin or into muscle
Injection of trigger points, 3 or more muscles
Injection, methylprednisolone acetate, 20 mg
Insertion of needle into vein for collection of blood sample
Testing for presence of drug, by chemistry analyzers
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
This service was performed 42 times for 42 patientsThis procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.
This service was performed 32 times for 16 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 402 times for 78 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 54 times for 35 patientsAn exam of neurobehavioral status is a medical procedure that evaluates your brain's functions. This includes assessing your cognitive abilities, emotional responses, and behavioral patterns. The first hour of the exam is typically dedicated to this initial evaluation.
This service was performed 242 times for 70 patientsThis procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
This service was performed 113 times for 19 patientsTrigger point injection therapy involves injecting medication into specific areas of your muscles, known as trigger points. These are areas that produce pain and discomfort. If you have three or more muscles affected, each will be treated individually.
This service was performed 42 times for 12 patientsMethylprednisolone acetate is a medication given via injection to reduce inflammation and pain. It's often used to treat conditions like arthritis, allergic reactions, and certain skin diseases. The 20 mg dose is tailored to your specific needs.
This service was performed 40 times for 20 patientsThis procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
This service was performed 48 times for 35 patientsChemistry analyzers are used to detect the presence of drugs in your system. This test involves taking a small sample of your blood or urine. The sample is then analyzed for specific substances. The results help in understanding your health condition better.
This service was performed 283 times for 51 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 92101 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $140.22
- Minimum New Patient Price $62.1
- Maximum New Patient Price $184.71
- Average New Patient Copayment $35.05
- Minimum New Patient Copayment $15.52
- Maximum New Patient Copayment $46.17
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $108.42
- Minimum Established Patient Price $20.62
- Maximum Established Patient Price $151.42
- Average Established Patient Copayment $27.1
- Minimum Established Patient Copayment $5.15
- Maximum Established Patient Copayment $37.85
* 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.
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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 1851399802, 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 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.
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 68 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 3 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1851399802, enumerated as an "individual" on July 13, 2005.
The provider is located at 1501 5TH AVE STE 100 SAN DIEGO, CA 92101 and the phone number is (619) 647-5072.
Internal Medicine with taxonomy code 207R00000X.