MS. MARGARET LYNN MEYER MD
NPI 1639289358
Orthopaedic Surgery in Sonoma, CA
Quality Rating: 82.16 out of 100 score
NPI Status: Active since August 30, 2006
Contact Information
181 ANDRIEUX ST
STE #111
SONOMA, CA
ZIP 95476
Phone: (707) 996-8017
Fax: (707) 996-8061
- NPI Profile Information
- Primary Taxonomy
- Insurance Plans Accepted
- Secondary Locations
- Medicare Participation & PECOS Status
- Areas of Expertise
- Physician Visit Costs
- Overall Quality Performance
- Quality Measures
- Hospital Affiliations - Privileges
- NPI Validation
- Other Providers Same Location
- Frequently Asked Questions
- Individual
- Female
- Years of Experience 28
- Orthopaedic Surgery
- Accepts Insurance
- Accepts Medicare Approved Payment
- PECOS Enrolled
- Medicare Quality Reporting
About MARGARET MEYER
This page provides the complete NPI Profile along with additional information for Margaret Meyer, a provider established in Sonoma, California with a medical specialization in Orthopaedic Surgery and more than 28 years of experience. She graduated from Temple University School Of Medicine in 1998. The healthcare provider is registered in the NPI registry with number 1639289358 assigned on August 2006. The practitioner's primary taxonomy code is 207X00000X with license number A88282 (CA). The provider is registered as an individual and her NPI record was last updated February 2026.
- NPI
- 1639289358
- Provider Name
- MS. MARGARET LYNN MEYER MD
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 181 ANDRIEUX ST STE #111 SONOMA, CA 95476
- Location Phone
- (707) 996-8017
- Location Fax
- (707) 996-8061
- Mailing Address
- PO BOX 1722 181 ANDRIEUX ST STE #111 SONOMA, CA 95476
- Mailing Phone
- (707) 996-8017
- Mailing Fax
- (707) 996-8061
- Medical School Name
- TEMPLE UNIVERSITY SCHOOL OF MEDICINE
- Graduation Year
- 1998
- Is Sole Proprietor?
- No
- Enumeration Date
- 08-30-2006
- Last Update Date
- 02-18-2026
- Code Navigator
Location Map
Secondary Locations
- 3901 Stewart Ave
Wausau, WI 54401
(715) 907-0900
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
Orthopaedic Surgery
- Taxonomy Code
- 207X00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A88282
- License State
- CA
- Taxonomy Description
- An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Anthem Bronze Preferred/Broad 5000 (3 Free PCP Visits + $0 Select Drugs + Incentives) - POS
- Anthem Bronze Preferred/Broad HSA (+ Incentives) - POS
- Anthem Bronze Preferred/Broad Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - POS
- Anthem Gold Preferred/Broad 1000 ($0 Virtual PCP + $0 Select Drugs + Incentives) - POS
- Anthem Gold Preferred/Broad Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - POS
- Anthem Heart Healthy Bronze Preferred/Broad 0 Med Ded ($0 Virtual PCP+$0 Select Drugs+Incentives) - POS
- Anthem Silver Preferred/Broad 4000 ($0 PCP Visits + $0 Select Drugs + Incentives) - POS
- Anthem Silver Preferred/Broad 5500 ($0 Virtual PCP + $0 Select Drugs + Incentives) - POS
- Anthem Silver Preferred/Broad Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) - POS
- HMO Bronze $0 Medical Deductible - HMO
- HMO Bronze 10000 - HMO
- HMO Bronze 7500 - HMO
- HMO Catastrophic 10600 with 3 free PCP visits - HMO
- HMO Gold 2000 - HMO
- HMO Gold 2700 - HMO
- HMO HDHP Silver 5900 - HMO
- HMO Silver 6000 - HMO
- HMO Silver 6600 - HMO
- POS Bronze 7500 - POS
- Oak $1,300 Gold - PPO
- Oak $2,000 Standard Gold - PPO
- Premier $2,000 - 25% - HMO
- Premier $3,500 - 30% - HMO
- Premier $4,000 - 50% - HMO
- Premier $5,000 HDHP - HMO
- Premier $6,000 - 40% - HMO
- Premier $7,500 - HMO
- Premier $7,500 HDHP - HMO
- Premier HMO $1,500 - 30% - HMO
- Premier HMO $2,500 - 20% Copay - HMO
- Premier HMO $3,400 - 30% HDHP - 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.
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 |
|---|---|---|---|
| P00239692 | OTHER (01) | RAILROAD MEDICARE | |
| 00A882820 | MEDICAID (05) | CA |
Medicare Participation & PECOS Enrollment Status
Margaret Meyer 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.
Margaret Meyer 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: 3072409911
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: I20190501000403
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.
Aspiration and/or injection of fluid from large joint
Established patient office or other outpatient visit, 10-19 minutes
Established patient office or other outpatient visit, 20-29 minutes
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
Lower limb (leg) arthroscopy (minimally invasive joint repair)
New patient office or other outpatient visit, 30-44 minutes
Upper limb (arm) arthroscopy (minimally invasive joint repair)
X-ray of knee, 4 or more views
This 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 40 times for 29 patientsThis is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
This service was performed 43 times for 29 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 59 times for 34 patientsTriamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
This service was performed 168 times for 31 patientsLower limb arthroscopy is a minimally invasive procedure that allows doctors to examine and repair issues in your leg joints. It involves making small incisions through which a tiny camera and instruments are inserted. This technique can help diagnose and treat various joint problems with less pain and quicker recovery time.
This service was performed for 12 patientsThis service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
This service was performed 21 times for 21 patientsUpper limb arthroscopy is a minimally invasive procedure used to examine and treat issues within your arm's joints. A small camera, called an arthroscope, is inserted through a tiny incision, providing a clear view of the joint. This method often results in less pain and faster recovery compared to open surgery.
This service was performed for 1-10 patientsAn X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.
This service was performed 19 times for 13 patientsPhysician Visit Costs
The typical physician office visit costs for Medicare beneficiaries in this area are: $24.04 for a new patient copayment and $19.48 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 95476 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99203
- Average New Patient Price $96.16
- Minimum New Patient Price $63.04
- Maximum New Patient Price $187.01
- Average New Patient Copayment $24.04
- Minimum New Patient Copayment $15.76
- Maximum New Patient Copayment $46.75
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99213
- Average Established Patient Price $77.94
- Minimum Established Patient Price $21.02
- Maximum Established Patient Price $153.4
- Average Established Patient Copayment $19.48
- Minimum Established Patient Copayment $5.25
- Maximum Established Patient Copayment $38.35
* 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 82.16, 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 provider also has detailed performance information the following quality measures: .
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: 82.16 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: 65.6
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: 93
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: 80.77
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: 80.77
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.
MIPS Quality Measures
The following performance measures were reported under the Merit-Based Incentive Payment System (MIPS) and Qualified Clinical Data Registry (QCDR) quality measures program.
| Quality Measure | Performance | Number of Patients |
|---|---|---|
| Documentation of Current Medications in the Medical Record | 7% | 132 |
| Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention | 41% | 41 |
| Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention | 49% | 41 |
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. Margaret Meyer is affiliated with the following medical facilities:
| Hospital Name | Address | Phone | Hospital Type | Overall Rating |
|---|---|---|---|---|
| ASPIRUS RHINELANDER HOSPITAL | 2251 NORTH SHORE DR RHINELANDER, WI 54501 | (715) 361-2000 | Acute Care Hospitals | |
| ASPIRUS WAUSAU HOSPITAL | 333 PINE RIDGE BLVD WAUSAU, WI 54401 | (715) 847-2121 | Acute Care Hospitals |
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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 1639289358, we treat the final digit (8) 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).
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 72 is 80. 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.
SONOMA, CA 95476
SONOMA, CA 95476
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1639289358, enumerated as an "individual" on August 30, 2006.
The provider is located at 181 ANDRIEUX ST STE #111 SONOMA, CA 95476 and the phone number is (707) 996-8017.
Orthopaedic Surgery with taxonomy code 207X00000X.
The provider might be accepting Accepts: Anthem Blue Cross and Blue Shield, Aspirus Health. Please consult your insurance carrier or call the provider to verify.
Margaret Meyer is affiliated with: ASPIRUS RHINELANDER HOSPITAL and ASPIRUS WAUSAU HOSPITAL.