Ragu Chandrasekharan Nathan, MD
Diagnostic Radiology · Stanford
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- Not verified
- Not the same as out of network.
- Office
- 1
Offices
1 location
Plan participation
Not verified
We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Nathan’s office at (650) 723-4000 to ask if they take your plan before you enroll.
California Medical Board record
Licence A55278 · Current
Licensed to practise in California · since 1995 · expires 2027-07-31 · University of Madras, Jawaharlal Institute.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
School, training and certification
What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.
Specialty certification
- American Board of Radiology - Diagnostic Radiology
Original Medicare doctor bills
$11,021
Medicare paid this office $11,021 for 51 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Screening mammography | 24 | $3,098 | $129 |
| Screening 3d breast mammography | 24 | $1,239 | $52 |
| Complete ultrasound scan of 1 breast | 12 | $1,145 | $95 |
Who their Medicare patients are
51 Original Medicare patients in 2024. Average age 71 · Also on Medicaid 37% · Health risk score 1.08. At or below the middle of the specialty; the typical diagnostic radiology clinician is at 1.7.
Conditions among them: High blood pressure 65% · Diabetes 35% · Coronary heart disease 22%.
The office billed $38,981, Medicare allowed $12,716 and paid $11,021; for 107 services of 17 kinds.
Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.
Year by year
| 2024 | 51 | 107 | 71 | 1.08 | $38,981 | $11,021 |
| 2023 | 649 | 878 | 72 | 1.56 | $75,987 | $16,981 |
| 2022 | 375 | 796 | 71 | 1.46 | $91,849 | $23,697 |
| 2020 | 297 | 597 | 72 | 0.97 | $68,379 | $20,413 |
| 2019 | 633 | 1,231 | 72 | 1.11 | $147,754 | $43,375 |
Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.
See the services billed each year
2023: 17 services
| Screening mammography | 117 | $4,279 | $37 |
| Screening 3d breast mammography | 106 | $3,074 | $29 |
| Ct scan head or brain without contrast | 41 | $1,117 | $27 |
| Dxa bone density measurement of hip, pelvis, spine | 95 | $902 | $9 |
| Ct scan of abdomen and pelvis without contrast | 15 | $802 | $53 |
| X-ray of chest, 1 view | 100 | $643 | $6 |
| Limited ultrasound scan of 1 breast | 18 | $544 | $30 |
| Diagnostic mammography of both breasts | 17 | $533 | $31 |
| X-ray of chest, 2 views | 76 | $494 | $6 |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 20 | $394 | $20 |
| Diagnostic mammography of 1 breast | 12 | $371 | $31 |
| X-ray of lower and sacral spine, 2-3 views | 19 | $104 | $5 |
| X-ray of shoulder, minimum of 2 views | 19 | $95 | $5 |
| X-ray of lower and sacral spine, minimum of 4 views | 14 | $87 | $6 |
| X-ray of knee, 4 or more views | 11 | $81 | $7 |
| X-ray of foot, minimum of 3 views | 18 | $78 | $4 |
| X-ray of knee, 3 views | 13 | $73 | $6 |
2022: 8 services
| Screening mammography | 43 | $6,495 | $151 |
| Screening 3d breast mammography | 30 | $1,791 | $60 |
| Limited ultrasound scan of 1 breast | 14 | $1,425 | $79 |
| Ct scan head or brain without contrast | 17 | $550 | $32 |
| X-ray of chest, 2 views | 13 | $408 | $31 |
| X-ray of chest, 1 view | 53 | $386 | $7 |
| Dxa bone density measurement of hip, pelvis, spine | 37 | $361 | $10 |
| X-ray of chest, 2 views | 35 | $320 | $9 |
2020: 3 services
| Screening mammography | 272 | $10,915 | $40 |
| Screening 3d breast mammography | 272 | $8,554 | $31 |
| Limited ultrasound scan of 1 breast | 11 | $28 | $3 |
2019: 9 services
| Screening mammography | 443 | $17,556 | $40 |
| Screening 3d breast mammography | 445 | $13,888 | $31 |
| Diagnostic mammography of 1 breast | 45 | $1,651 | $34 |
| Limited ultrasound scan of 1 breast | 41 | $1,250 | $28 |
| Ct scan head or brain without contrast | 18 | $599 | $33 |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 16 | $400 | $25 |
| X-ray of chest, 1 view | 25 | $190 | $8 |
| X-ray of chest, 2 views | 11 | $100 | $9 |
| X-ray of surgical specimen | 14 | $94 | $7 |
Medicaid work
$15,857 in 2024
Medicaid paid $15,857 for 153 billed services this clinician did in 2024, up to 38 people in a month for one service.
Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 38 | $5,220 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ BI | 20 | $3,368 |
| Complete unilateral real time ultrasound of breast | 27 | $2,964 |
| SCREENING DIGITAL BREAST TOMOSYNTHESIS BI | 38 | $2,077 |
| Ultrasound, breast, unilateral, real time with image documentation, including axilla when performed; limited | 18 | $1,612 |
| DIGITAL BREAST TOMOSYNTHESIS BILATERAL | 12 | $618 |
| 2024 | 153 | 6 | 38 | $15,857 |
| 2023 | 1,072 | 15 | 67 | $1,763 |
| 2022 | 831 | 15 | 67 | $41,677 |
| 2020 | 266 | 4 | 116 | $7,093 |
| 2019 | 64 | 2 | 32 | $481 |
See the largest Medicaid services in earlier years
2023
| Radiologic examination, chest; 2 views | 236 | $301 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ BI | 48 | $295 |
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 172 | $250 |
| Radiologic examination, chest; single view | 153 | $187 |
| Ultrasound, breast, unilateral, real time with image documentation, including axilla when performed; limited | 106 | $165 |
| Computed tomography, head or brain; without contrast material | 27 | $134 |
| SCREENING DIGITAL BREAST TOMOSYNTHESIS BI | 154 | $121 |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 74 | $118 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ UNI | 13 | $62 |
| Ultrasound, abdominal, real time with image documentation; complete | 25 | $41 |
| X-RAY EXAM OF SHOULDER | 13 | $23 |
| X-RAY EXAM OF FOOT | 14 | $20 |
2022
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 142 | $16,569 |
| Ultrasound, breast, unilateral, real time with image documentation, including axilla when performed; limited | 57 | $4,974 |
| Ultrasound, pregnant uterus, real time with image documentation, fetal and maternal evaluation, after first trimester (> or = 14 weeks 0 days), transabdominal approach; single or first gestation | 31 | $3,094 |
| Ultrasound, pelvic (nonobstetric), real time with image documentation; complete | 52 | $2,920 |
| Ultrasound by transvaginal approach | 38 | $2,730 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ BI | 16 | $2,659 |
| Ultrasound, abdominal, real time with image documentation; complete | 28 | $2,586 |
| SCREENING DIGITAL BREAST TOMOSYNTHESIS BI | 40 | $2,285 |
| Ultrasound, pregnant uterus, real time with image documentation, limited (eg, fetal heart beat, placental location, fetal position and/or qualitative amniotic fluid volume), 1 or more fetuses | 24 | $1,712 |
| Ultrasound, pregnant uterus, real time with image documentation, transvaginal | 15 | $1,380 |
| Radiologic examination, chest; 2 views | 187 | $524 |
| Radiologic examination, chest; single view | 141 | $217 |
2020
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 116 | $3,301 |
| SCREENING DIGITAL BREAST TOMOSYNTHESIS BI | 116 | $2,588 |
| Ultrasound, breast, unilateral, real time with image documentation, including axilla when performed; limited | 20 | $691 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ UNI | 14 | $513 |
2019
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 32 | $269 |
| SCREENING DIGITAL BREAST TOMOSYNTHESIS BI | 32 | $212 |
Money from drug and device companies
$16 in 2019
A payment is not proof that care is biased.
| Integra LifeSciences | Codman Certas | $16 | 1 payment
|
See the published payment
| Integra LifeSciences | Meals · 2019-12-17 | Codman Certas | $16 |
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 98.4 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1467413344
- Licence
- CA A55278California A55278: Current · expires 2027-07-31
More record details
- Sole proprietor
- No
- Medicaid ID
- MA 0141763
- Taxonomy
- Diagnostic radiology (2085R0202X)
- Mailing address
- 300 Pasteur Dr, Stanford, CA, 94305
- NPI first listed
- 2006-03-30
- NPI last updated
- 2023-03-28
- NPI record certified
- 2023-03-28
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 6845 Lindbrook Way, Sacramento, CA, 95823