Bonni S. Massa, M.D.
Bonni S. Massa is an Obstetrics & Gynecology specialist based in Petaluma, CA with over 29 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Patients across CA can see Bonni S. Massa, M.D. in person in Petaluma or via virtual visit — no travel required. She graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1997 and has 29+ years of clinical experience. She regularly sees Medicare patients with high cholesterol, hypertension, and arthritis (per CMS claims data).
At a glance
- Uses generic medications more than 42% of reporting doctors in California
- Virtual visits available — no app or travel required
Older · 579dNPPES updated 2024-10-22 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
1496 Professional Dr Ste 603, Petaluma, CA 94954-6698
How Does This Doctor Compare?
Based on Medicare data, this doctor favors affordable generic drugs over brand-name ones.
Generic Rx
↑ Higher = better86.4%
California avg: 83.3 · US avg: 82.8
✓ Higher than most doctors nationally(+3.6 pts)
Typical range among reporting doctors in CaliforniaHow often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
69
Unique beneficiaries
Standard volumePrescription Recipients
34
Patients prescribed
Prescriptions Written
88
Total claims
Total Medicare drug cost: $8k
Percentile rankings compared against 9,360 reporting peers in California.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages High Cholesterol, Hypertension, and Arthritis.
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+1%) — a focus area for this doctor
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↓ Fewer patients than average (-28%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-19%) — less common here
Weakened bones that are more prone to fractures, common in older adults
US avg: 18.1%↑ More patients than average (+4%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$426 received from industry
15 transactions reported in 2024 ·Low tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Bonni S. Massa's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1997
Case Western Reserve University School of Medicine
Board certified · Oct 20, 2024
Self-reported via NPPES
29 years in practice
Experienced
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Taxonomy: 207V00000X
Education & Training
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University (Class of 1997)
Mailing address
2100 Webster St Suite 319, San Francisco, CA 94115-2373
Differs from practice location
Primary hospital affiliation: Acute Care Hospitals
CMS Certification Number: 190034
View hospital on Medicare Care CompareVirtual Obstetrics & Gynecology Care With Bonni S. Massa
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Bonni S. Massa for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to Petaluma required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Bonni S. Massa
Dr. Massa is listed as active in the NPI registry with telehealth listed in Petaluma, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (628) 336-5260.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Bonni S. Massa
Practice Location
1496 Professional Dr Ste 603, Petaluma, CA 94954-6698
Mailing Address
2100 Webster St Suite 319, San Francisco, CA 94115-2373
This is a provider directory. Contact the office directly to schedule appointments.
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