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Colin Richard Lenihan, MD

Nephrology · Stanford

NPI 1154616373

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
17
3 carriers
Office
1

Offices

1 location · Stanford Health Care · 3,152 clinicians in this group

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Plans that list them

17 plans · 3 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Lenihan’s office at (650) 723-4000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

17 of 17 plans

Plans whose provider directory lists this clinician
Alignment Health BreathEasy (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Clarity (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Harmony (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Honor+ Plan (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health My Choice CalCare (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Silicon (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health smartHMO (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health the ONE (HMO)Alignment Health PlanListedOct 3, 2026
SCAN Balance (HMO C-SNP)SCAN Health PlanListedOct 3, 2026
SCAN Classic (HMO)SCAN Health PlanListedOct 3, 2026
SCAN MyChoice (HMO)SCAN Health PlanListedOct 3, 2026
SCAN Strive (HMO C-SNP)SCAN Health PlanListedOct 3, 2026
DualConnect (HMO D-SNP)Santa Clara Family Health PlanListedSep 1, 2026

California Medical Board record

Licence A127012 · Current

Licensed to practise in California · since 2013 · expires 2027-08-31 · National University of Ireland University College at Dublin.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Original Medicare doctor bills

$26,439

Medicare paid this office $26,439 for 162 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes45$9,077$69
Return visit (30+ min)72$8,776$76
Return visit (30+ min)32$3,478$97
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes15$1,857$116
Initial hospital care with moderate level of medical decision making at least 75 minutes11$1,696$154

Who their Medicare patients are

162 Original Medicare patients in 2024. Average age 61 · Under 65 51% · Women 49% · Also on Medicaid 57% · Health risk score 4.89. Above the middle of the specialty; the typical nephrology clinician is at 4.01.

Conditions among them: High blood pressure 75% · Chronic kidney disease 75% · Diabetes 53% · Coronary heart disease 34% · Heart failure 29% · Atrial fibrillation 23% · Depression 23% · Cancer 14% · Dementia 12% · COPD 10% · Stroke 9%.

The office billed $110,137, Medicare allowed $36,219 and paid $26,439; for 326 services of 13 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

Original Medicare by year
2024162326614.89$110,137$26,439
2023295759624.83$258,384$62,665
2022293822614.40$272,417$63,979
2021299920594.53$308,157$73,629
2020295889615.21$273,872$65,514
2019282792615.18$179,160$58,067
2018293857594.99$193,881$60,514
2017278985594.82$216,534$67,570
2016240865594.82$199,409$59,158
2015144491555.10$121,088$35,516

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: 4 services

Original Medicare services billed in 2023
Return visit (30+ min)172$24,601$83
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes96$24,387$73
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes60$7,772$120
Initial hospital care with moderate level of medical decision making at least 75 minutes11$1,759$160

2022: 5 services

Original Medicare services billed in 2022
Return visit (30+ min)173$32,357$84
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes87$21,698$64
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes38$4,687$123
New patient visit (45+ min)11$1,397$127
Needle biopsy of kidney11$1,218$111

2021: 4 services

Original Medicare services billed in 2021
Return visit (30+ min)168$36,149$87
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes90$24,633$66
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes34$4,636$125
Long return visit (40+ min)14$2,199$129

2020: 4 services

Original Medicare services billed in 2020
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes132$25,874$67
Return visit (30+ min)139$23,700$69
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes61$7,924$122
Return visit (30+ min)25$2,500$81

2019: 3 services

Original Medicare services billed in 2019
Return visit (30+ min)160$26,137$70
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes97$20,564$66
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes45$5,940$124

2018: 4 services

Original Medicare services billed in 2018
Return visit (30+ min)158$25,222$67
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes112$23,755$65
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes36$4,360$121
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes31$2,964$90

2017: 4 services

Original Medicare services billed in 2017
Return visit (30+ min)152$33,371$67
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes114$25,394$64
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes37$3,499$90
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes21$2,685$122

2016: 4 services

Original Medicare services billed in 2016
Return visit (30+ min)140$31,095$66
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes92$19,016$63
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes31$3,718$116
Long return visit (40+ min)12$1,189$99

2015: 4 services

Original Medicare services billed in 2015
Return visit (30+ min)78$16,380$70
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes58$12,852$65
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes14$1,712$122
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes12$1,079$90

Medicaid work

$7,346 in 2024

Medicaid paid $7,346 for 233 billed services this clinician did in 2024, up to 25 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.

Largest Medicaid services in 2024
Return visit (30+ min)120$4,347
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES113$2,999
Medicaid work by year
2024233225$7,346
2023766337$20,740
2022790241$18,176
2021729229$15,599
2020580227$12,884
2019425227$8,812
2018366225$6,209
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES468$13,576
Return visit (30+ min)281$6,093
IP/OBS CONSLTJ NEW/EST PT MOD MDM 60 MINUTES17$1,071

2022

Largest Medicaid services in 2022
Return visit (30+ min)418$9,180
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES372$8,997

2021

Largest Medicaid services in 2021
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES382$9,318
Return visit (30+ min)347$6,281

2020

Largest Medicaid services in 2020
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES274$7,742
Return visit (30+ min)306$5,142

2019

Largest Medicaid services in 2019
Return visit (30+ min)327$6,095
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES98$2,717

2018

Largest Medicaid services in 2018
Return visit (30+ min)249$3,581
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES117$2,628

Drugs they prescribed that Part D paid

$243,126

Pharmacies billed $243,126 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

1,129 generic and 110 brand-name prescriptions · $243,126 in drug cost · 36 antibiotic prescriptions to 21 people.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Largest Part D drug costs
Tacrolimus198$15,352$78
Procrit15$11,794$786
Zarxio14$11,591$828
Prograf15$10,360$691
Mycophenolate Mofetil132$8,865$67
See all 18 drugs
Every Part D drug this clinician prescribed
Tacrolimus198$15,352$78
Procrit15$11,794$786
Zarxio14$11,591$828
Prograf15$10,360$691
Mycophenolate Mofetil132$8,865$67
Envarsus Xr12$7,796$650
Entecavir12$3,050$254
Prednisone255$934$4
Losartan169$855$5
Cinacalcet30$794$26
Atorvastatin54$197$4
Mycophenolic Acid11$181$16
Famotidine17$142$8
Pantoprazole14$109$8
Amlodipine Besylate39$96$2
Lisinopril12$93$8
Carvedilol17$83$5
Metoprolol15$18$1

Year by year

Part D prescribing by year
20241,239130None9%$243,126
20231,680158NoneNone$307,624
20222,042155NoneNone$281,089
20211,713142NoneNone$236,204
20201,5521301% (12)None$199,457
20191,3771301% (18)None$303,376
20181,401127NoneNone$349,809
20171,2771111% (13)15%$269,866
201681778None18%$192,608
2015119310% (0)None$32,467

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 31 drugs

Part D drugs prescribed in 2023
Cinacalcet74$68,463$925
Tacrolimus181$31,523$174
Veltassa21$23,632$1,125
Atovaquone29$21,387$737
Trulicity22$21,173$962
Lokelma16$14,034$877
Entecavir31$10,935$353
Procrit12$9,611$801
Mycophenolate Mofetil126$4,977$39
Valganciclovir18$4,006$223
Losartan184$3,103$17
Prednisone234$1,661$7
Carvedilol64$1,161$18
Atorvastatin98$1,046$11
Amlodipine Besylate67$641$10
Ciprofloxacin12$465$39
Pantoprazole37$440$12
Famotidine29$431$15
Nitrofurantoin12$352$29
Tamsulosin12$317$26
Sulfamethoxazole-Trimethoprim39$291$7
Diltiazem 24hr Er (Cd)13$255$20
Mycophenolic Acid13$228$18
Gabapentin11$211$19
Omeprazole18$201$11
Metoprolol15$192$13
Fludrocortisone Acetate14$185$13
Furosemide23$164$7
Metoprolol21$162$8
Lisinopril12$162$14
Clonidine13$116$9

2022: 40 drugs

Part D drugs prescribed in 2022
Atovaquone42$36,304$864
Cinacalcet94$32,745$348
Tacrolimus205$25,504$124
Lokelma21$14,163$674
Veltassa13$13,962$1,074
Eliquis19$11,096$584
Mycophenolate Mofetil134$8,529$64
Valganciclovir21$7,259$346
Entecavir34$6,850$201
Mycophenolic Acid12$3,705$309
Prograf19$2,729$144
Losartan131$1,646$13
Carvedilol117$1,433$12
Sodium Polystyrene Sulfonate16$1,301$81
Potassium Citrate Er12$1,263$105
Prednisone150$1,115$7
Amlodipine Besylate155$915$6
Famotidine58$782$13
Ondansetron16$502$31
Calcitriol12$496$41
Pantoprazole46$484$11
Gabapentin45$431$10
Atorvastatin87$416$5
Nitrofurantoin Mono-Macro11$358$33
Tamsulosin31$340$11
Hydralazine11$307$28
Diltiazem 24hr Er (Cd)12$293$24
Furosemide62$287$5
Rosuvastatin16$236$15
Levetiracetam12$182$15
Sulfamethoxazole-Trimethoprim39$179$5
Fludrocortisone Acetate12$178$15
Ciprofloxacin12$138$11
Lisinopril33$125$4
Omeprazole26$119$5
Cephalexin12$109$9
Metoprolol15$99$7
Clonidine15$97$6
Allopurinol11$89$8
Glipizide17$50$3

2021: 33 drugs

Part D drugs prescribed in 2021
Cinacalcet91$30,593$336
Atovaquone30$28,240$941
Tacrolimus195$24,200$124
Trulicity13$11,598$892
Valganciclovir29$9,311$321
Mycophenolate Mofetil153$8,193$54
Zarxio11$8,148$741
Mycophenolic Acid13$4,016$309
Potassium Citrate Er25$2,696$108
Entecavir13$1,117$86
Prednisone163$1,027$6
Losartan89$955$11
Carvedilol73$773$11
Levetiracetam12$562$47
Clonidine11$519$47
Tamsulosin43$500$12
Pantoprazole46$491$11
Amlodipine Besylate72$412$6
Famotidine49$406$8
Calcitriol16$356$22
Nitrofurantoin Mono-Macro11$300$27
Azathioprine16$263$16
Ciprofloxacin20$255$13
Atorvastatin46$184$4
Gabapentin32$177$6
Sulfamethoxazole-Trimethoprim49$177$4
Clonidine27$163$6
Diltiazem 24hr Er (Cd)11$119$11
Furosemide23$107$5
Metoprolol21$96$5
Lisinopril33$77$2
Omeprazole16$73$5
Atenolol11$59$5

2020: 25 drugs

Part D drugs prescribed in 2020
Tacrolimus336$45,491$135
Cinacalcet48$22,150$461
Mycophenolate Mofetil198$17,096$86
Eliquis21$9,732$463
Mycophenolic Acid15$4,634$309
Calcitriol33$1,277$39
Prednisone175$1,004$6
Potassium Citrate Er12$997$83
Fluconazole15$893$60
Atorvastatin72$524$7
Azathioprine22$494$22
Tamsulosin37$456$12
Carvedilol41$386$9
Losartan40$349$9
Amlodipine Besylate78$328$4
Levothyroxine12$227$19
Pantoprazole31$171$6
Furosemide40$170$4
Clonidine26$158$6
Famotidine16$129$8
Sulfamethoxazole-Trimethoprim39$111$3
Cephalexin11$69$6
Gabapentin12$55$5
Ciprofloxacin12$51$4
Lisinopril15$21$1

2019: 27 drugs

Part D drugs prescribed in 2019
Noxafil14$86,398$6,171
Envarsus Xr59$34,436$584
Tacrolimus249$30,971$124
Sensipar22$30,012$1,364
Cinacalcet29$27,932$963
Atovaquone23$18,537$806
Mycophenolate Mofetil125$17,561$140
Eliquis11$6,730$612
Sodium Polystyrene Sulfonate12$814$68
Calcitriol18$655$36
Prednisone106$572$5
Fentanyl11$572$52
Atorvastatin52$522$10
Tamsulosin31$502$16
Amlodipine Besylate94$464$5
Losartan45$402$9
Pantoprazole16$338$21
Azathioprine16$338$21
Acyclovir19$304$16
Carvedilol37$243$7
Pravastatin15$203$14
Sulfamethoxazole-Trimethoprim51$168$3
Lisinopril37$155$4
Furosemide31$148$5
Famotidine25$136$5
Metoprolol19$94$5
Cephalexin13$66$5

2018: 26 drugs

Part D drugs prescribed in 2018
Noxafil20$118,229$5,911
Sensipar53$61,795$1,166
Atovaquone44$39,096$889
Valganciclovir23$22,544$980
Tacrolimus172$16,696$97
Neupogen14$14,064$1,005
Envarsus Xr22$13,065$594
Eliquis22$10,044$457
Mycophenolate Mofetil130$9,505$73
Entecavir14$8,821$630
Atorvastatin93$857$9
Calcitriol36$747$21
Prednisone125$582$5
Losartan62$374$6
Amlodipine Besylate83$296$4
Tamsulosin22$249$11
Sulfamethoxazole-Trimethoprim57$227$4
Acyclovir16$215$13
Pravastatin20$180$9
Carvedilol35$178$5
Pantoprazole20$146$7
Metoprolol35$139$4
Famotidine29$106$4
Isoniazid12$72$6
Furosemide17$60$4
Lisinopril20$48$2

2017: 32 drugs

Part D drugs prescribed in 2017
Sensipar46$79,139$1,720
Envarsus Xr20$21,168$1,058
Valganciclovir13$20,773$1,598
Neupogen14$15,314$1,094
Tacrolimus93$9,276$100
Mycophenolic Acid13$8,378$644
Prograf12$8,105$675
Lantus Solostar18$6,846$380
Eliquis13$5,066$390
Mycophenolate Mofetil85$3,842$45
Nadolol12$1,395$116
Atorvastatin112$914$8
Bumetanide11$858$78
Prednisone90$517$6
Tamsulosin26$482$19
Pantoprazole29$346$12
Calcitriol28$305$11
Amlodipine Besylate77$301$4
Acyclovir28$275$10
Sulfamethoxazole-Trimethoprim60$270$4
Metoprolol49$260$5
Carvedilol43$199$5
Levothyroxine18$182$10
Lisinopril46$151$3
Glipizide21$147$7
Spironolactone17$119$7
Losartan24$109$5
Furosemide27$101$4
Pravastatin11$89$8
Hydrocodone-Acetaminophen12$69$6
Gabapentin11$46$4
Famotidine16$37$2

2016: 22 drugs

Part D drugs prescribed in 2016
Sensipar63$118,819$1,886
Viread18$18,090$1,005
Neupogen12$11,930$994
Tacrolimus49$6,164$126
Eliquis11$3,942$358
Mycophenolate Mofetil39$1,550$40
Nadolol11$1,273$116
Atorvastatin66$580$9
Prednisone67$538$8
Diltiazem 24hr Er11$371$34
Amlodipine Besylate60$286$5
Tamsulosin14$271$19
Diltiazem 24hr Cd18$260$14
Calcitriol25$223$9
Pravastatin18$206$11
Glipizide27$157$6
Sulfamethoxazole-Trimethoprim38$152$4
Lisinopril38$138$4
Acyclovir12$94$8
Carvedilol20$93$5
Pantoprazole16$61$4
Famotidine14$25$2

2015: 2 drugs

Part D drugs prescribed in 2015
Sensipar15$21,668$1,445
Atorvastatin17$158$9

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
76.5 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1154616373
Licence
CA A127012, ZZ 57531California A127012: Current · expires 2027-08-31
Video visits
Lists video visits
Gender
Male
More record details
Sole proprietor
Yes
Taxonomy
Federal specialty code 207RN0300X (207RN0300X); Internal medicine (207R00000X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2011-06-15
NPI last updated
2025-12-22
NPI record certified
2025-12-22

This is when the NPI record was last certified, not a medical board exam.

Extra NPI addresses: 725 Welch Rd, Palo Alto, CA, 94304 · 780 Welch Rd, Palo Alto, CA, 94304