Medicare Enrolled
Dr. Myfanwy Callahan, M.D.
Student in an Organized Health Care Education/Training Program · Medford, MA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Callahan from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
Are you Dr. Callahan?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Callahan
Dr. Myfanwy Callahan is a student in an organized health care education/training program specialist in Medford, MA, with 14 years of NPI registration. Based on federal Medicare data, Dr. Callahan performed 2,646 Medicare services across 2,150 unique beneficiaries.
Between the years covered by Open Payments, Dr. Callahan received a total of $50 from 1 pharmaceutical and/or device company across 2 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in student in an organized health care education/training program. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Callahan is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 14 years in practice
▲ Top 5% volume in MA
$50 industry payments
Medicare Practice Summary
Medicare Utilization ↗2,646
Medicare services
Top 5% in MA for student in an organized health care education/training program
2,150
Unique beneficiaries
$22
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~189 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
436 | $8 | $17 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
197 | $13 | $67 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
194 | $10 | $39 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
184 | $49 | $346 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
181 | $54 | $363 |
| Blood creatinine level test A blood test that measures the amount of creatinine, a waste product from muscle wear and tear, to help assess kidney function. |
138 | $5 | $21 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
130 | $47 | $265 |
| Complete blood count (CBC), automated An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood. |
100 | $6 | $26 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
93 | $16 | $68 |
| Urine microalbumin test (kidney screening) A laboratory test that measures the amount of microalbumin, a small protein, in a urine sample. This test is used to detect early signs of kidney damage. |
65 | $6 | $23 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
60 | $29 | $119 |
| Creatinine test (kidney function) A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury. |
57 | $5 | $21 |
| Blood potassium level test A blood test that measures the amount of potassium in your body. Potassium is an electrolyte that helps control heart and muscle function. |
57 | $5 | $19 |
| Blood sodium level test A laboratory test that measures the amount of sodium in your blood. Sodium is an electrolyte that helps regulate fluid balance and nerve function. |
47 | $5 | $19 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
46 | $34 | $70 |
| Automated urinalysis An automated laboratory test performed on a urine sample to analyze its chemical and physical properties. The procedure uses machinery to detect various substances and cells within the urine. |
39 | $2 | $9 |
| Flu vaccine, quadrivalent A flu shot containing four strains of the influenza virus to help prevent seasonal influenza infection. |
39 | $76 | $148 |
| Urine culture, bacterial colony count A laboratory test that measures the number of bacteria growing in a urine sample to help identify infections. |
37 | $8 | $33 |
| Drug test with direct observation A drug screening test performed under direct observation to ensure the sample is provided correctly. This method is used to verify the integrity of the specimen collection process. |
35 | $12 | $41 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
35 | $15 | $61 |
| Electrolyte blood test panel A blood test that measures the levels of sodium, potassium, chloride, and carbon dioxide to evaluate electrolyte balance. |
30 | $7 | $28 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
29 | $8 | $34 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
28 | $8 | $31 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
22 | $9 | $36 |
| Total calcium level test A blood test that measures the total amount of calcium in your body. |
21 | $5 | $21 |
| PSA test (prostate cancer screening) | 20 | $18 | $74 |
| Hepatitis B surface antibody test A blood test that measures the level of antibodies against the hepatitis B surface antigen. This test is used to check for immunity to hepatitis B or to verify the effectiveness of the hepatitis B vaccine. |
20 | $11 | $43 |
| Hepatitis B surface antigen test A blood test that uses an immunoassay technique to detect the presence of the hepatitis B surface antigen. This test identifies whether the hepatitis B virus is currently present in the body. |
20 | $10 | $42 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
19 | $10 | $43 |
| Liver enzyme (SGPT) level test A blood test that measures the level of the liver enzyme SGPT to assess liver function. |
19 | $5 | $21 |
| Hepatitis B core antibody test A blood test that measures the level of antibodies to the hepatitis B core antigen. This test helps determine if a person has been infected with the hepatitis B virus. |
19 | $12 | $49 |
| Pneumonia vaccine administration This procedure involves the injection of a vaccine to protect against pneumococcal disease. It is administered by a healthcare provider. |
19 | $34 | $69 |
| Bacterial culture, aerobic A laboratory test that grows and identifies bacteria capable of surviving in oxygen. The results help determine the presence of specific aerobic microorganisms. |
18 | $8 | $33 |
| COVID-19 vaccine administration Administration of a single dose of the coronavirus vaccine. |
18 | $45 | $70 |
| Pneumococcal conjugate vaccine (PCV20) An intramuscular injection of the 20-valent pneumococcal conjugate vaccine. It is used to protect against diseases caused by Streptococcus pneumoniae bacteria. |
18 | $281 | $652 |
| COVID-19 vaccine (Pfizer bivalent) Administration of a 30 mcg dose of the SARS-CoV-2 vaccine via intramuscular injection. |
18 | $128 | $144 |
| Blood glucose level test A test that measures the amount of sugar in your blood. |
17 | $4 | $16 |
| Iron level test | 15 | $6 | $26 |
| Transferrin level test A blood test that measures the amount of transferrin, a protein that binds to and transports iron in the body. |
15 | $12 | $52 |
| Antibiotic sensitivity test A laboratory test that determines which antibiotics, antifungals, or antivirals are effective against a specific microorganism using microdilution or agar dilution methods. |
15 | $8 | $35 |
| Liver function blood test panel | 14 | $8 | $33 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
14 | $3 | $10 |
| Parathyroid hormone level test A blood test that measures the amount of parathyroid hormone in your body. This hormone helps regulate calcium levels in the blood and bones. |
13 | $40 | $166 |
| Uric acid level test A blood test that measures the level of uric acid in your body. Uric acid is a waste product formed when the body breaks down purines. |
13 | $4 | $18 |
| Erythrocyte sedimentation rate (ESR) test A blood test that measures how quickly red blood cells settle in a test tube to detect inflammation in the body. This specific method is performed manually rather than using an automated machine. |
11 | $4 | $14 |
| PSA test (prostate cancer screening) A blood test that measures the level of prostate-specific antigen to screen for prostate cancer. |
11 | $19 | $61 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
Industry Payment Transparency
Open Payments through 2024 ↗$50
Total received (2022-2024)
Avg $25/year across 2 years
Bottom 20% in MA for student in an organized health care education/training program
1
Company
2
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$50 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$32
2022
$18
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Abbott Laboratories
$32
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2022-2024) ›
Abbott Laboratories
$50
Top 3 companies account for 100.0% of all-time payments
Associated products mentioned in payments ›
FREESTYLE LIBRE · FREESTYLE LIBRE 3
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Student in an organized health care education/training programs within 10 mi
10,270
Per 100K population
632.8
County median income
$126,779
Nearest hospital
WINCHESTER HOSPITAL
2.7 mi
2.7 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Callahan is a mixed practice specialist, with above-average Medicare volume (top 5% in MA), with low-engagement industry engagement.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Callahan experienced with blood draw (venipuncture)?
Based on Medicare claims data, Dr. Callahan performed 436 blood draw (venipuncture) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Callahan receive payments from pharmaceutical companies?
Yes. Dr. Callahan received a total of $50 from 1 company across 2 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Callahan's costs compare to other student in an organized health care education/training programs in Medford?
Dr. Callahan's average Medicare payment per service is $22. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Callahan) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
Explore related providers
Same specialty & city
Student In An Organized Health Care Education/training Programs in Medford
Browse student in an organized health care education/training programs in Medford ranked by procedure volume and transparency data.
Highest volume
Top Student In An Organized Health Care Education/training Programs in MA
Student in an organized health care education/training programs ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Student In An Organized Health Care Education/training Programs in MA
Which MA student in an organized health care education/training programs receive the most from drug and device companies.
About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology